Hi Gerry:
I have no experience with the GPS V, having only used the SP III and SP 2650 myself, but I know that the three automotive autorouting GPSR's (GPS V, SP III, and SP 26xx) share a lot of common code between them for navigation, so maybe some of the ideas below might help you.
My touring preferences are exactly the same as yours - I detest motorways, and prefer the secondary and tertiary roads. What I do with the SP III and now the SP 2650 is to check the box in the routing preferences that says "avoid highways" - this tends to keep me off the major highways, but it's not the perfect solution, because it sometimes results in me getting routed through minor streets when passing through urban agglomerations.
Garmin is aware of the desire of many touring motorists to avoid the major highways (known as 'superslabs' in America). I think they are working on a more "fine tunable" method of allowing the rider to assign priorities to the different classifications of roadway, but I don't know how soon this will happen.
Problem is, the vast majority of purchasers drive cars, and want either the fastest route (without regard to the scenery), or the shortest route. Plus, the automobile users are generally not as technically competent with the GPSR's as the motorcycle users, this means that if Garmin puts in an enhancement for the motorcycle community, they have to be careful that it will not cause confusion for the automobile users.
Garmin recently gave us "avoid unpaved roads", specifically in response to requests from the sport-touring riders (like me, on my ST1100), so there is hope - they do listen carefully to us and try to pay attention to our unique needs. Not sure if they will come out with an option "seek out unpaved roads" for the dual sport community, though.
Anyway, hang in there, I am sure more enhancements to the software will be coming down the line for the summer of 2004.
PanEuropean