Well the problem with that is the Razr's battery isn't removable, so you can't put the SD card there or it doesn't do much for you.
It also looks like most manufacturers are moving in this direction of creating devices with non removable back plates.
Honestly, this isn't a concern of mine. I don't need access to my SD card and I think we'll have more than enough internal storage in the future in our phones. We're going to be moving closer and closer to storing all data in the cloud, this is one thing that will catch on because it gives you access to your data at any place you happen to be or any device you happen to be using.
Once people become more familiar, I believe they'll find it's a very effective way to store data.