I thought I should just chime in to give my feedback on the new Hawx Ultra 130 GW Boa boot with dual straps installed in the place of the stock ones. I have mine set up with 13 degrees forward lean, I run the spacers and also run custom footbeds. I have not cooked the liners and have three days in them thus far solely for resort use (the use they will see with me, resort fomo + travel boot).
These are by far the best iteration of the Hawx Ultra 130 thus far. The liner is really nice and supportive, heel hold is excellent, the cuff height is nice - the adjustable tongue is a nice feature and the dual strap actually works with this boot (something they did not do when I tried to run them on Lange XT3s - work = performance upgrade instead of just more hassle over Booster straps).
I do not get what SkiEssentials go on about in their review with regard to fit - these are not tiny wrt fit. Scarpa Quattro XTs are a lot lower volume.
The cons thus far is that like all three generations of Hawx that I've tried thus far these do not keep water out. I do not know why this remain an issue, but oh well - it is a spring time issue so no deal breaker, just a bit annoying. They are also the creakiest boots I've ever had. I've never had a boot that is anywhere near as loud when it is being flexed, though - it is not really an issue when skiing as your attention is elsewhere going mach looney or just larking about.
Overall impression? Excellent boot - perfect score of 5/7. Will def recommend.