Well, it depends. Since mahogany is a very mid-heavy wood with its signature resonance, which can vary with the density of the particular plank, if the D'Addario scoop is not in the same place as the mahogany bump, it could produce a whang or sound thin. I found this out with flats. I love Fender flats and their growl. And on the alder P/J they sound great. But they whanged on my gig bass, which has an agathis body, which is kind of a cross between long grain cedar and mahogany, and is tonally similar. when I played steels, GHS Super Steels had a great presence and sustain on the agathis, but were clanky on the P/J. I'm thinking the La Bellas may actually be a better fit tonally on your SG. Of course, YMMV.It sounds like the D'Addario set is similar in feel with a bit less mids, that might be a good match for the SG since it can be mid heavy at times.
In a guitar context, I have found that D'Addario strings sound better on Fender and Fender-derived guitars and GHS sound better on Gibson and Gibson-derived guitars for the same reason. Other persons mileage will vary.
