The only problem I can see you having with that kind of configuration is it makes UV mapping more difficult. Just as long as the frontal is completely flat UVs, you can get away with some distortions at the back. Obviously it might bother a perfectionist but it's tricky to get it done without a bit of stretching (sometimes quite a bit actually). If you can manage UVs that are at the lower range of stretching or distortion I'd be mightily impressed.