I also have some crowns and implants, so I totally get why you're using a mouthguard. I've heard that
Invisalign braces can also help with grinding, so that's another option to consider if you're looking for a more low-key solution.
As for me, I haven't used a mouthguard personally, but I have a few friends who swear by them. They say they can be a little uncomfortable at first, but you get used to it pretty quickly. And the peace of mind you get from knowing your teeth are protected is totally worth it. In short, props to you for taking your dental health seriously!