Excellent backpacking/hunting tripod. Lots of adjustability for the weight. A bit on the "fragile" side compared to other makes. Fully extend the legs and clean it good with an air compressor when you can. Dirt gets in the adjusters and they become really "grainy" and noisy quite easily.
I bought one yesterday (the 634) and after a not small amount of research I decided to try the MTN HNTR fluid head. Also liked the look of the Aziak ball head but I think I'd prefer a pan head for my uses. Considered a Wiser or Tricer LP but wasn't ready to spend that kind of money right now.
A feature of this tripod that doesn’t get enough attention is that you can remove the bottom post and get it as low as 4” off the ground. This would be useful if you plan on shooting off it .
I ordered a 634 recently too (unfortunately missed the Amazon deal). Patiently awaiting delivery. I decided to pair it with the Tricer LP. Should be a sweet lightweight combo for my Kowa 554 and binos!