One Plus One: Any Issues? (T-MOBILE) topic

I got a 1+1 invite and thinking about sealing the deal on the 64gb sandstone. It will be mainly for development purposes. If i were, however, to use it for a bit with my T-Mobile USA nano sim, are there any known compatibility issues? Are there any common issues with the 1+1 phone that I should be worried about, and the quality of the phone, etc?

Thanks.