I have just completed Episode 2 so thought I would give this mod a try, I know that you can either use the HD models in the mod or the original Valve models but is it possible to switch files around and use the Valve Episode 2 models in HL2 and Episode 1?
The Alyx, Eli, Kliener models from Episode 2 would be great in HL2 and then possibly switch the Barney model from Episode 1.
I understand than the above may be a little hopeful but with the way the mod changes the models around got me thinking it could well be possible???