Yay, a Sol combo! Something to try on my friend >D Using HCB+S in a combo isn't something I thought of either... gotta try these out (after finals <_<)
Here's something I came up with as a bit of a tech trap/rethrow, though it's extremely simple and I don't really know what the best follow up would be. Maybe a good way to end a match in control:
Throw, 5P/6K (I only tested 5P), 2HS (as soon as/before the opp. techs, so you only get the vacuum hit) -> whatever you want, rethrow, combo, etc.
The thing is that it's blockable, but blockable low, so IF you did it early enough I think you could easily sneak in a TK Bomber. On either hit or block you could go into another throw provided you wait for the blockstun-delay. Even better, on hit I believe you could go into whatever combo you want, depending on if you're midscreen or corner.
Application wise it's obviously not something to yield damage, but I think it's a good setup for mind games.
edit: I forget that I set the tech delay to 3 frames--mostly 'cause I don't think most people pull out 0-frame techs, but I don't have much match experience so...