No. Just because I’m not always able to use my own device. If I use other layout and have to use other’s devices (e.g. library computer), I will be confused with normal QWERTY layout.

I do.

I use Colemak daily, it’s much more comfortable and practical.

I maintain my Qwerty accuracy from time to time, because you always need it.

I see it like speaking another language, they each have their use