I think there may be no-way to get the licenses or Feature Sets info except by MIB, however the IOS Feature Set is listed in the IOSImage (Inferred) field. example C2800NM-ADVIPSERVICESK9-M
I have a number of routers where IOSImage is for instance 'C2900-UNIVERSALK9-M'
"show ver" will then tell me if it's licensed for "ip base" or "ip services" or whatever
I have now filed a feature request: http://thwack.solarwinds.com/ideas/2681