The supermarket bread aisle is overflowing with hamburger and hotdog buns. All kinds. All varieties (except my favorite New England style hotdog buns they no longer sell around these parts anymore :-(
At our BBQ's we sometimes grill/toast our hamburger buns on the inside, the part the burger goes on, but not the crust side.
I see a lot of friends and families of ours toast both sides at their BBQ's.
I find it dries out the bun much more when toasted on both sides and the crumbly texture isn't as pleasing as a soft bun.
What is your preference?