Thats an interesting question and while i have never tried mixing the two species, i would say in theory it might be possible being that they are both quite friendly towards their own kind...
The problem is how do they react with puffers of another genus is the big question...
For example i’ve in the past heard of people mixing SAP’s with MBU but never really heard of SAP’s mixed with puffers of similar size...
So my only real advise is, if you have a spare tank to sepearate them if things go south it might be worth a try, otherwise i would probably choose the species i liked more and keep them in a tank of their own...