I've done the same. I use iOS and had no problem.

I recently wrote the Sean Kovacs (author of GVMobile) and suggested a potential revenue stream which I think he decided to ignore. Many VOIP companies and others sell foreign SMS messages very cheaply. For example Fishtext.com. You can send foreign texts and spoof your own mobile number. The problem on Apple (don't know about Android) is that you don't have threaded messages. You have to go to Fishtext's app to send and go over to Apple's to receive. I suggested create an optional feed to these services from his GVMobile app to send foreign texts. He could either resell the texts and turn a profit or let people buy the texts from Fishtext/Voip and create some sort of referral code system in his app to let Fishtext know he was the source and get a revenue stream from these referrals. I think one of these developers might be interested in such an idea.