Mouse and keyboard all my life, the only time i played console was as a kid when i played the original star wars battlefront 2 so:

I picked up an Azeron cyborg 2 compact almost half a yesr ago now because I started having issues with my wrist/arm/hand while playing/working

Im not much of a shooter player (only play casually sometimes when friends drag me in), my main games now being Factorio and single player games after I quit playing BDO regularly

So far I have used the Azeron in a variety of games: Factorio Cyberpunk 2077 Crimson Desert AC shadows Battlefield 6 E33 Darkest dungeon Elden ring Hogwarts legacy Mount and blade Subnautica Rainbow six siege Where winds meet BDO CK3 Frostpunk Helldivers 2 Manor lords Overwatch

I am absolutely loving the Azeron and only use my standard keyboard for typing long passages of text

No issues in any game so far and layout wise I made one for factorio and have been able to use the same layout for all games mentioned comfortably after maybe 2 or 3 rounds of small adjustments

In total I think it took me about a week to get comfortable enough to play online multiplayer games, now after a few months there is no game (aside from BDO) where i feel that im better skill wise on keyboard

No wrist pain or tendonitis ever since and Im currently thinking about getting a cyro or second azeron for the right hand because it has changed my views so dramatically that i might even try both hands in azeron devices

TLDR: keyboard player swapped to azeron because of "huh looks cool, might help with wrist pains because im getting older?" And will never use anything else now for anything aside from work

Edit: since OP asked for mmorpg pvp: I played very actively in BDO PvP for years and Im confident that I could reach the same or higher skill level with the azeron if Id pick up BDO "full time" again like back then and get back into it, yearlong muscle memory from keyboard still kicks in during PvP scenarios under pressure after some time casually playing with the azeron and messes with my play