Well if you look at the Lil'T for example: Sure you have a distal taper (which, btw. is the reason why the leaf shape performs so well in many tasks), but you start of with a 4 mm blade stock. Only the last 1/4" or so drops below 1.5-2 mm (I don't have Lil'T next to me as I type. This is an approximation) and most knifes have a piece at the tip that is quite thin. I have never really considered the Spyderco tips as fragile, especially not the one on the Lil'T. If you have a distal taper like on the Caly Jr. and start with 2 mm blade stock, it gets pretty thin out there but than again, its a knife designed for different tasks.
Dropping a knife point down with a slight angle can generate substantial torques especially if the handle is heavy and many knifes would loose or damage a tip dropping it just right. On the other hand, Michael Janich punched the tip (full force to the hilt) of the Yojimbo and Ronin (and those ARE pretty fine tips) repeatedly through a pig skull without any harm to the tip. So it is really a question of what you expect your tip to do. Read a couple of Cliff's reviews (and read them carefully: Not only whether they failed but under what conditions they failed. Most knifes fail in Cliff's hands, that alone doesn't mean much. Important is how and when they failed). Sure he broke the tip of a Chinook II, but it was while he was standing on the handle while the tip of the knife was buried in a log. He showed that the Manix is more than capable of being punshed through the lid of a can to serve as emergency can opener, and quite frankly I wouldn't hesitate to push, if not punch a Delica III through a can either. For the new Delica/Endura 4 that is a ho-hum.
I guess I really depends all on what you call fragile.
As to H-1, do a search, there is quite a bit of information out there in past threads. Edgeholding is good, I don't think it is as good as the common prime steels, but it still holds an edge very well. It is definitely a "real bladesteel" as opposed to the usual ultra stainless junk-made in China POS (18/8 and the like). And it sharpens up very nicely, takes a very nice edge very easily.