Why would you want a lubricant(GPL100) on the slider that best used prior races and won't last long? It doesn't make any sense.
On the other hand the RO KT is a lubricant specially designed for Key Tronic to provide smooth action to their keyboard switches. It is safe for plastic, very durable and provides a superior coating to any other dry lubricants on the market. Also it won't attract any dirt or dust.
I'm looking forward to hear about your results. If it works out for you, I may do a group buy later on that 0.5l bottle.
Let's say it is out of curiosity. And I am more open to possibility of finding a better solution. If you accept one thing is better than anything else, there would be no improvement and no fun in searching.
I am fully aware of the low viscosity and relatively high evaporation rate at high temperature(66C). Yet, I wonder if it would leave some kind of coating of the oil behind. Also, I am kind of looking for one lubricant used in one of my membrane keyboards, which one with and the other without made night and day difference, but I never figured out what they were. They had very low viscosity and lasted pretty long time on seldom used keys and were slightly wet. I seriously doubt it is krytox, but I want to try some lubricants that have low viscosity and plastic safe. The membrane keyboard I am talking about here is MS keyboard elite for bluetooth.
Also, having two different lubricants would enable me to mix. I could try to mix low viscosity with grease or any other solvents. My main purpose is to try out and experiment.
I will let you know how GPL100 works out for my worn out HHKB. Previously I tried KG8 on the sliders only(KG8 seems to be acetone based and eat away housing of HHKB), but I was not very happy with the results.
Since then, I have painted thin coat of some lithium grease with PFTE and it seem to work well for now. It reduced friction by 5g to 10g(one to two nickles), so effect is pretty huge. It is however unclear how it would perform in the long term.
Oh.. and I also tried silicone oil before(high viscosity oil), and it didn't work out well either. It was too sticky to my taste. Maybe I over applied the oil. This is one of many reasons why I want to try low viscosity one.
My choices make sense to me, but I guess it doesn't make sense to you. Well, to general public, spending good amount of money on keyboards is non-sensical anyways. A self-proclaimed #1 keyboard expert openly say putting effort in lubricating Cherry switches don't make much sense. I seriously doubt OTD/KBDMania guys who are into cutomizing would agree on that opinion. Every opinion may have its own grounds, but I don't think they are pursuasive to every one.