I had my Travelsim yestarday too
Similar test, but using a S55 and 2 Nokia handsets I had best results without any problem for outgoing calls.
About SMS good news; it's quite strange to have 2 different numbers (1 for voice calls, 1 for sms) but no problem with major networks for incoming/outgoing. I had troubles only with 3ITA, but H3G Italy is really crappy for international SMS...