I have 4 Squalls in 3 of the plastics in varying weights. I also have an Opto Fuse and sold a GL Fuse.
My 2 ProLine Squalls, 169g and 177g and my RDGA Squall 147g are identical in PLH. My SP Squall has the old sketch basket stamp 171g, has a lower PLH, and is my favorite. Way more glide than the others and holds an anny to the ground.
The Squall's sharper nose profile and smaller diameter make it much better in the wind and for me allows for more controlled distance than the Fuse. I carry a seasoned D Aftershock for the 250-300 dead straight to turnover shots in calm or downwind conditions and throw the Squall for that range into the wind. If I'm looking at something in the 275-325 range I'm considering the Squall depending on wind, line, and elevation change.
Low ceiling shots or approaches that need some skip/slid - Squall.
Forehand flicks with more distance or more movement than the Breaker/Zone - Squall.
Short shot into the wind, a bit long for a Breaker/Zone, where a turn-over would be ugly - heavy Squall.
Thrown with 300ft of my power:
My 171g basket stamp SP Squall is like a shorter River (my 164g GL).
My 177g ProLine Squall is like a shorter TeeBird (my 168g E*).
My 169g ProLine Squall is in between the above.
My 147g RDGA Squall pops up flat from hyzer and tracks right, to the ground. (Hey, like my Fuse!)
For me the Squall just isn't a finesse type mid-range like the Fuse. I think it's a totally different flavor of disc than the Fuse, as in, room for both in the bag.