Too funny...there certainly are two different camps when it comes to hermits. I agree that hermits can be the bandets of the tank. No doubt they "compete" against other hermits and snails for a home. However, I have never had an issue with reef hermits causing issues with sensile inverts. About once a year I find myself replenishing my clean-up crew...both crabs and snails. I still find it amazing the response my scarlet reef hermits get from guests. They love them...I have beautiful fish and an abundance or various corals but people still seem to be struck by the crabs...It actuall becomes a game to find as many as they can. The more you look the more you see. Personally, I find them entertaining as well.
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian