I would suggest reading about some of the modifications people have
made to the key switches. They do have a decently loud click, but some
people have added foam to the keys to allow them to slide their
fingers back and forth instead of clicking down as on a normal
keyboard.
Something like this should help a lot.
http://wiki.alphagrips.com/Comfortable+Computing#DickensonModificationsWhile the keys are loud, they don't seem to have such a hard stop as
most keyboards do. It's a very loose feel to the keys which produces
the loud sound.
Hope this information helps you, and I hope you decide to purchase a grip soon.
Doug Sims