Thanks for the tips/info!
Yes, I've seen the wire loop attachments and they seem ideal for a universal mount.
I still don't like the idea of a sling attached to the handguard. I'm sure that those who "train" frown upon my next statement, but I haven't found a specific location for which I "must" grip the fore end. Sometimes I move my grip forward and sometimes it's back near the mag well. It's a CARBINE, so there isn't much room there to begin with -no sense interfering with that by putting a sling in the way.
I do like the looks of the "SOB" sling - it's just not as widely compatible with my other long guns as far as I can tell.