Let us look at the pros and cons of the following sprocket:
11-40 Shimano 11s
The 11v 11-40 Shimano crankset you can join in single, double and triple. In fact, the limits are exceeded the 11x1 SRAM, with a wide range of reports, sufficiently close to each other.
A good solution, although in the end, not much different to the classic 10x2 or 10x3. In the 11x1 configuration is slightly disadvantaged compared to SRAM 11x1. The configuration 11x2 is the most balanced. Also in this case there is no possibility of choice of different sprocket.