Micro SIM to full size SIM adapaters?

[McLovin2]

I recently upgraded from a T-Mobile G2 to a Samsung Galaxy S iii.

The Samsung Galaxy S iii uses the new micro SIM. The G2 uses the old full size SIM. I want to quickly and easily move back and forth between the old and the new phones by using a micro SIM adapter in the old phone.

Has anyone had successes or failures with this stuff?

 

[Harry2]

T-Mobile sells MultiSIM cards, so you could use both phones with your actual phone number at the same time.

I doing this without any probs, only I've to decide which phone has SMS/text ability

Harry