Youre in luck, sort of. The Flexlock version does have the holes where the Leverwires toe and heel bail points attach. No one sells these individually, but you may be able to call Petzl directly and order some. Your crampon frames will still have the front and rear posts where the Flexlock system attaches, but they wont really be in the way. You could always cut them off if it bothers you. My suggestion, however, is to simply buy a pair of Leverwire crampons and hang onto your Flexlock ones. I have three different pairs of crampons that I use for various things, and I still dropped dough on a full-strap model this fall for ski mountaineering and early spring rock routes with steep snow approaches. A full-strap crampon can be used for nearly anything. One day youll reach back into your close and be happy that theyre still there.
1) No, you cannot use your old boots. You need to get boots that are Dynafit compatible. Theyll have two holes in the front of the soles (on the sides) and two in the back where the bindings attach. I use the Black Diamond Methods with my Dynafit bindings, but if you way to stay in brand, then I suggest the Dynafit ZZero 4 C-TF for a classic four-buckle design.
2) You can tour on these skis, or any skis for that matter, but I highly recommend some legit alpine touring skis if youre going to get serious about it. AT skis are much lighter than regular alpine skis, so theyll be easier to haul through the backcountry. If you mount up your alpine skis for the backcountry, you can always pull the bindings if you want to get some real AT skis later. But remember, you have to get new skis as well, so itll end up costing more in the long run.
3) You can mount these bindings by yourself, and they do come with instructions. However, theyre much trickier to mount than anything else out there, especially alpine bindings. I highly recommend taking them to a ski shop that handles AT gear and have them do it. The $50 you save wont seem that great if you screw up your brand new skis.
4) I use Black Diamond GlideLite Mix Skins and would recommend them to anyone. Theyre way lighter and less bulky than straight nylon but still stick very well on climbs. Trim them right and you wont be sorry.
Well, the short answer is maybe. Regular crampon toe bails (with a few rare exceptions) don't fit over the wide duck bill on the front of telemark boots. Some companies like Petzl make replacement toe bails designed specifically for telemark boots, but I can't find any indication that Cassin makes a similar attachment. However, nearly all toe bails attach the same way, so you may be able to get away with using the Petzl bails on these crampons, but I'm not positive. Anyone? To address the vertical ice part of the questionsYou won't get the same performance as you would with actual climbing boots, or even close. Putting crampons on tele boots is generally a ski mountaineering move. The problem is that the duck bill will cover part of the front points and you won't get very good penetration no matter how hard you kick into the ice. You can definitely climb this way, but if you want to get serious about ice climbing, just get some ice climbing boots.