Thanks Reefchief and Makoa. I guess I will need to try an open cell suit, then. No biggie, I'm sure I can sell my current wetsuit - it's only been used twice.
Can the speardiver wetsuit be custom fit, or no?
I dont think they can be. But Like Makoa says. No need, you'd be surprised at how "custom" they fit. They stretch so well that you can almost certainly find a size that fits like a custom suit. Especially if you aren't rail thin and tall. That seems to be the body type most in need of custom suits. Look at some of the different body types in Speardiver suits on the reviews and you can see what I mean.
I actually just switched from a small suit to a medium. Ive been wearing a small for 2+ years and it fit great. But I tried on a medium recently and found the fit to be even a little better. I even just bought a new suit in small. The small stretched to fit so well I never thought a medium would be better. Being a local if you buy a Speardiver suit Dan can size you up and fit you correctly to ensure you go home with the right suit.

