Inline/roller blades are similar to figure skates if you're just doing forward stroking and crossovers, so they are good for building strength and practicing stroking when you don't have ice available. BUT be very careful going backwards or doing mohawks! Stepping down backwards onto a figure skate you'd keep your weight forward on the blade so that the bottom pick digs in and keeps you from slipping. If you do that on roller blades. . . swoosh! BAM!! Hello concrete.