You must have fingers of steel. I'm a classically trained pianist and I type properly and all, but even so... I would tire out quickly typing on grays.
I would suggest you maybe try to get a few grays if you can, and load them all up on the max keyboard sampler.
Trying just one switch by itself with one finger (especially your dominant finger) is a lot different than typing. Also when you're testing a switch, you're pressing it differently than you would when you type and you use different muscles.
I'm just saying. Grays really could be the right switch for you, so don't let me talk you out of it if that's the case. They tend to be unpopular because they are in fact very very heavy. They were never really created with the idea of being used for an entire keyboard in mind. But then again, neither were Greens really, and those are very popular too.
When you say grays, btw, are you referring to linear grays or tactile grays?
Either way, I would suggest you get a couple and set the sampler down and pretend to type on it like a keyboard best you can for a little bit. Just to be sure.
If you do decide you like them though, swapping switches into a keyboard is an incredibly easy process, and most 60% boards (I'm looking at you Poker. And v60 too) are very very mod friendly. Especially if you don't have a backlit keyboard. Desoldering and soldering switches will be the most basic of soldering skills and would be decent practice if you don't already know how. (At some point in this hobby, it never hurts to pick up that skill).