I tend to doubt it. Based on the rent for that club in LAS (pretty expensive) plus limited business traffic (conventions yes, but not a huge O&D base of it) would hamper it.
While I'd love to see lounge access in LAS (and God I love that President's Club...), I don't see it happening anytime soon. I'd say the most pressing priority right now is IND, and I'd say PHX is probably higher on the list as well.