Great replies,
I actually want the keyboard for productivity, not for gaming. I decided I want reds since I went over to a local PC store and they had a Cherry tester, on which the reds were most comfortable for me (the softest). I gather that the romer-g is Logitech's attempt to copy or create something similar to cherry-reds. Second best were cherry browns, btw.
I type all day for work, and mechanical boards aren't a hobby. I just want something more comfortable than rubber domes for day to day typing. So probably I won't change any keys unless they break or something.
I'm also a Russian speaker who's located in Israel, so probably after the keyboard arrives I'll put on tri-language stickers (en-heb-ru) on the board. Just some miscellaneous info for you guys.
Everyone has their own tastes, but the biggest demographic for linears is gaming. That's all I really use them for myself. For typing, people typically prefer either tactiles or clickies. Was MX red switches what you meant by red keys?
There are both linear and tactile Romer-G switches. They're actually made by Omron, of mouse switch fame. They're the B3K series. I have never tried anything other than the linears though myself. Apparently the tactiles are compared to MX brown by some.
Cherry was kind of the last man standing during the keyboard dark ages (the 1990s and early 2000s), so there have been many clones and imitators that have emerged since the "gaming" keyboard market helped spur a sort of renaissance in mechanical keyboard use and development. Romer-Gs came out around 2014, so that would be prime time for people to start trying to compete directly with Cherry to steal some of their market share in the consumer space. Both the linear Romer-G and MX red are rated at 45g actuation force. I don't have a tester nearby to compare them directly though.
Which switches were on the tester? Most people usually don't end their keyboard journey (for typing) on a Cherry switch of any shape or form, besides clones manufactured by other third parties. Cherry's switches are typically considered to be reliable yet lackluster. Personally, I always like to refer to them as the Honda Civic of mechanical switches. I'm not sure if you've got those in either Russia or Israel. They get you from A to B every time without a fuss, the journey just isn't particularly interesting. Linear switches of almost any type are especially like this.
There are lighter switches than MX red available, even in tactiles, but you would be unlikely to find them in a wireless full-size board with dedicated media keys anyway,
unless you're unbothered by 96%.
This would open the door a little bit to different switches and cap options. That board, in particular, is offered with either Gateron switches or LK opticals. Gaterons (generally) are MX clones done better than Cherry. Their clickies are more tactile and more consistent, their tactiles are less scratchy, and their linears are smoother. Optical mechanisms tend to offer even smoother operation out of the box than other types of linears because there are no physical contacts.
One thing you may notice switching from a cheap rubber dome board to a light linear switch in a conventional OEM mechanical keyboard at first is you may be bottoming out with a little more force than is comfortable. After typing for half an hour or so, you should acclimate pretty well to what sort of force is required to actuate the switch without slamming the switches down so forcefully.