I've used a switchblade device before and it's just too primitive for me. You can't buy an iceboard but you can make one, here is my iceboard 2017, Ignore the white markings those are cutouts I'm going to make later on to lighten the board a little. 4 hockey blades, steel center beam, thick baltic plywood, aluminum mounting plates (ice skates at an angle to dig into the ice), center swivel, snowboard bindings. If this design works good I will probably end up doing a complete rebuild with thinner plywood, fiberglass epoxy, change the center beam to aluminum and lighten up the entire build or maybe move the entire structure to aluminum bars and only have plywood for the binding mounts.
This is I guess my 20th build? I have made them smaller in past years, but the boards have gotten bigger and bigger to make them more stable, unfortunately it is pretty heavy right now which is why I'm going to probably rebuild this again for build 21 I guess.
When I kite with ice & snow patches I have plenty of fun on my snowboard. What I do when I hit the ice is flatten the board so you're not on edge, and point the board straight downwind then dig in again when you hit the snow. Of course if you try to edge on ice you will fall down that's not fun. Just point the board straight downwind when you hit the ice and you'll have plenty of stability. The switchblade has an unfortunate characteristic where it is quite sensitive to the amount of snow over the ice, so for instance, you have 1/4 inch of snow over the ice or 1 inch of snow over the ice or no snow over the ice, it performs differently in each case (because there is actually a 3 point contact, one at the switchblade and 2 more at the front and rear tip of your snowboard). I will do more carthweels with a switchblade in those sorts of conditions instead of just using my snowboard.
If you are on skis instead of a snowboard you can just edge on the icy spots because skis have better grip, but I'm not a skier.
Here's my Holly Jolly Christmas Video from yesterday