Well, they're quite light, or used to be, before the sub 30g biners came out, but AFAIK those are all quite small, whereas the Helium is quite large. I also have quite a few small biners and they definitely do have their place, but as an alrounder, I prefer the larger stuff, with a traditional, asymetry D shape, which the Helium does. Also, 9kn gate open strength isn't too bad, especially at that wheight, but looking at the Camp dyon, maybe nowadays that's low-ish?
They're also no-snag/keylock, which is a pro for me.
However, they're not some almost self-clipping biners as some bent gates are wire gates with a big lip are, so if that's your thing, look elsewhere.
Also, they've got a big nose due to that, so if you're in an area with lots of old and/or selfmade bolts and pytons, you might encounter protection they simply won't fit.
Oh, and apparently, their keylock gate tends to ice up for some people and their i-beam construction catches slush, which then freezes into place.
Personally, never had an issue with it, but I'm not doing too much ice climbing, so other folks might have other opinions on that.>>2209606
You don't. Ice climbing is the most retarded kind of climbing. Not only do you climb something for not real reason at all as with any climbing, you're also freezing while doing so, having ice cold water run into your arms and leaving your clothing at the socks, all the while having any oh so small fall giving you a huge potential for injuries of all kinds.
t. (occasional) ice climber
(but besides that: Find someone experienced or take a course)