Mark B, I own both a Silvio 1.0 and a 2.0. The 1 has a Sram double setup while I have an Ultegra triple on the 2.
In the almost 4 years that I have had the Silvio 2 I have used the small ring probably not more than 15 or 20 times.
Still, it can be reassuring to know you have the bail out gear...