We just recently started grilling our corn & really like it that way!
I've tried several different ways. We decided we didn't like it done in the husks because the corn took on a "husk-like" taste...besides it's too much work to peel it back & take out the silk then tie it up again.
Now we just husk the corn as usual & then put it right on the grill. I like the little grill marks it gets. We grill with the lid down & turn it 3 times...about 4 min on each side. DH says he doesn't like to grill longer than 12 or 13 minutes total.
DH still uses butter on his, but I've found that a sprinkle of lime juice on the corn & n othing else is really good once it's been grilled!