Cheers Primarch.
I've still got plenty more to paint, which is good and bad!, but the army is getting there.
I have painted up a formation of guardians, including a few units to give them some backup.

These are the old plastic space marine boxed set guardians, with a plastic farseer and banner bearer from the Epic Eldar Warhost plastic box.
Only four stands, plus a farseer, so I will add some more in the future. I still have plenty of guardian models ready to base and paint.
I also did some heavy weapons for them too.

These have a couple of crew added to the base. One is a regular guardian, the other is a heavy weapon crewman (crewelf?) from the Warhost box.
And for a bit more killy-ness I did some support weapons too. These are from the Warhost box again.

And to help add some resilience to them all (plus some extremely destructive short ranged shooting) I did up three bases of plastic wraithguard. I still have another three of these in the painting queue.

So when I put all this together for epic armageddon formations I end up with:
Saim-Hann list guardians:

Biel-Tan list guardians:

So I'm looking forward to having some games with these.