From my limited use, and observation of others using them:
Suction cups. Easily removable.
Weight. Shouldn’t matter unless you’re 140lbs or walking over a half mile from access.
Straps- I’m all for a cam buckle strap on a single stick set up. And they work fine for multiple sticks too. Dead simple to use. But even deader simple is buckleless or a rope mod. Also shaves significant weight.
Quality. There’s probably more of these sticks in circulation that any other “mobile” climbing stick. If not, they’re top 2-3. Hawk makes them cheap, with cheap quality control. They will fail at a higher rate than better quality sticks with better quality control. But there’s a big misunderstanding of the math here. That said, if you’re the type that thinks even a small chance of stick failing is the reason to get a more expensive or more robust stick, ask yourself this: Does the difference in a .001% chance of failure, and a .0005% chance of failure, matter? By not climbing a tree, you reduce that number to .0000% of stick failure. It’s relative.
They’re cheap slightly heavier sticks that get the job done for a huge amount of people.