How to choose grips for trail riding AND commuting? I use my mountain bike for trail riding (a few hours on weekends) and for commuting (20-50 minutes each day), on paved or dirt roads (I have 2 different routes).

I would like to replace the grips on my handlebars (because my existing ones are getting too old). I would like to understand which grips fit the very different styles of riding I do.

My current thinking is like this: I can do the commuting without gloves, to minimize the equipment I mess up with on daily basis, – and then I need smooth grips, which probably are a bit worse for trails. I can choose to always ride with gloves, and then I can get deeply-grooved grips (that would be better for trail riding?). Which important factors do I miss here?

I used ergonomic grips in the past, like in this picture; didn't like them.
I use Oury Mountain Grips on my mountain bike and my city bike. 

They have a cheaper slide on version (about $10-12 USD) and a lock on version ($ about $30 USD) which I prefer.  The lock on version avoids the 'slippy grip' issues you sometimes have when water eeks under the edge of the grip and it slips on the bars.

These grips are smooth and cushy enough to wear without gloves and are good and sticky when used with gloves.