I must admit when I googled that ratio list for the alfine 11 several months ago I was a bit skeptical that someone had just calculated them starting from the bottom gear ratio of the alfine 8. However, now that LordOnOne spotted Shimano's recommendation of 1.9 chainring/sprocket ratio, it sounds reasonable for the intended 'comfort bike' application:
I looked at the Marin San Anselmo, which is available in both Alfine 8 and deraileur versions. The Alfine 8 version ranges from 99 to 32 gear inches. The deraileur version (48/38/28:11-32) ranges from 119 to 24 gear inches. If there was an Alfine 11 version with 1.9 chainring/sprocket ratio, it would range from 115 to 28 gear inches, which imho seems about right.
I'm definately going to upgrade to the Alfine 11, since I use an Alfine 8 all year round at the moment on a P7. In particular, I'll be relieved to have a decent gear shifter, since the Alfine 8 trigger shifter is absolute pants whilst the Nexus 8 grip shifter is better but has dreadful build quality (as you'd expect).
I run a 30t chainring with either a 18t or 20t sprocket depending on how hilly the ride is going to be… The 30t 68mm granny (http://www.sjscycles.co.uk/product.asp?pf_id=3941&src=froogle) is a godsend as it gives me perfect 42mm chainline, plus its a bargain as its 5mm thick and looks to have been CNCed. It also means that with the same length chain I can have a 36t/12t on the middle which I use for singlespeed commuting with a 2nd set of wheels, plus a bash guard on the outer.