I've climbed for 25 years in steel klieins, which weigh-in at around 5lbs per set. You can pick up a pair of those for under ~$150 ...maybe less, whereas the Geckos are 3x higher (if it's a new proposition, I'd look for used online, regardless of brand).
I do have these on my my 'upgrade to lighter version list' but behind a few other things sine the Kleins have worked for the past 30 years (different sets of course) and I'd only be looking at ~2lbs savings ...did I just say "ONLY". Maybe I should bump them up the list. Heck that's almost 50%!!
I am in the process of doing the strap mod w/1" polypro and Tethrd T-hooks. That will drop the weight a bit over the leather straps/metal buckles.
Oh and regarding spur length, I 'upgraded (last season at the urging of others) to longer "tree spikes" and am now going back to shorter "pole spikes". I'm one who hates the longer spikes and feel less in control and the pole spikes have worked for 25 years.
Lots of good options ...good luck!