The crown guard has never bothered me. Just get a nice fit with the strap and it will be comfortable.
I've worn mine (312) for the whole of lockdown and not swapped it at all. It feels completely normal, however, I know that when I haven't worn it for a while it can feel heavy. If you're used to bit watched on a bracelet this won't bother you, but when I swap after w week with a g-shock it surprises me.
The way I type and lay my forearms on the desk means that the buckle is more of a problem, but that's every watch...