I've ridden mine for a number of one hour-ish rides and find the bike to be quite compliant yet very stable. My bike is pretty much OEM with a new Hi-Ten chrome fork and a replacement saddle.

Granted, here in S/W Michigan I haven't taken it down up any mountain climbs or tricky decents. But I find that I can accelerate easily, take turns with confidence, and just comfortably glide along without thinking about it.

And, just because, here is a pic from my most recent ride.