EVF Compatability

No, only on the Panny cameras.
The Oly finder is way better anyway.

 

Makes me wonder if Panny will come out with an improved LVF2 with higher resolution. Could their connector support a better one. I would hope so.

A fun side note is that you can pay a lot more for a Leica EVF1, which is a re-branded LVF1, and it will work on the GF1, but gives you the same resolution.

 

I've no doubt this is true, but at the same time, it's twice the price. For occasional use in bright sunlight, a lower resolution, less expensive EVF for Olympus cameras would appeal to me.