I played it one season, and it may have just been my league, but they beat the hell out of eachother with thier sticks. I thought I was in a lacross game and I will never play it again. I don't feel like loosing a limb.
I personally love it. Lotta fun, and it helps you develop a set of hands. (Being a good skater doesn't allow you to blow by opponents anymore).Pretty physical and it can get a bit congested. Obviously MUCH slower then ice, you have LOADS of time to think out and make the pretty passes.
I play floor (basically the same as dek, but we use a roller hockey rink) hockey more than I do ice nowadays. About a month ago, we had a team fly in from Toronto to come play us......they (most of them in their late 30s/40s) beat us (in our 20s/early 30s) 3-2.
I'm a goalie, and it can be frustrating playing with a ball. I use my ice hockey glove out there and can't catch a ball for the life in me.....really ought to just use a baseball glove, but then I wouldn't be color coordinated
Style of game is a lot different. As others have said, it can be a lot more choppy than ice in terms of flow. Stickhandling and running at full speed is something that some folks have problems with.