Yes, would be great to see a live example of client rendered tiles.
I believe their ProtoBuffer approach sounds promising and their position in the mapping / OSM community is strong enough to get this to some kind of standard.
Have seen a few client vector-based approaches before. 2 of the better ones:
MapDroyd - was a product of OneStepAhead - now seemingly part of Cloudmade ( http://wiki.openstreetmap.org/wiki/MapDroyd - still in Google Play with screenshots etc search for MapDroyd )
I believe their ProtoBuffer approach sounds promising and their position in the mapping / OSM community is strong enough to get this to some kind of standard.
Have seen a few client vector-based approaches before. 2 of the better ones:
https://github.com/jywarren/cartagen
MapDroyd - was a product of OneStepAhead - now seemingly part of Cloudmade ( http://wiki.openstreetmap.org/wiki/MapDroyd - still in Google Play with screenshots etc search for MapDroyd )