John we have the Hurricane and Tornado in the V12 shop in Liverpool. I've got a pair of Raven's on test at the moment and they have been fantastic indoors. Fit very similarly to solutions and the rubber is identical. The heels don't move at all and the toebox is great. Only thing I am unsure about is the velcro system being too long so when fully tensioned up it can also miss the velcro. I imagine its to do with Sportiva copywrighting the closure system so they had to alter it (it has those sliding points on it to change the direction of tension across the top of the foot but doesn't do much for me.
You would prob get into them if you fancy having a try? Can bring them down the cave next week or wherever we get to on Tues.