I like the idea that the grip felt good to you. Personally my favorite bow for a grip is the Apache by Navajo Bows. I shoot other bows and enjoy them, but I can't get over the grips Roy Hall puts on the Navajo models.
I would definitely sign up for a shooting clinic if you can find one in your area. Even if you end up shooting differently than the instructor recommends, you will know what you are doing.
Personally I call the split finger method the Mississippi release, named after Elvis' home town.