Hey,
Forge world has brought out a new PDF with the full army list on it for free.
http://www.forgeworld.co.uk/fwDownloads
I don't think it's a common army people run but I've found it to be fun.
What would you like to know? The basics are is a combine
SM and
IG force (only specific units from each codex) where you can use the
IG as meat shields to give your
SM +1 cover saves.
I love to use Huron, a few tactical squads, some Conscripts, and oh so many Leman Russ Tanks. I use to love the off-table bombardments but they have been removed from the new PDF so I'm thinking bike squads are the way to go (with the chapter tactics and all).
Huron is awesome if you can put him in a good squad (terminators in a Land raider if you have the points?) and unless it's changed you can't use Valthex in a Tyrants Legion. Sorry. :|
Hope this helps!