Originally Posted by lehite
Unfortunately I do not have any other android device to download with, and I would want to be able to update the apps without constantly sideloading.
Keep in mind, I've found that once you sideload an app, it then becomes available for updates on the Market the same as any other.
It seems the compatibility check only happens initially. Once you sideload, it's as though the market sees an app as: "Well, it's running on your device, so here's the update..."
There's a caveat: it's still possible that running an update will break a previous version that runs on the NT. I think that happened for some with the Facebook app update.
So far, I've had the market update several otherwise incompatible apps that I sideloaded with no ill effects.