Sounds like a solid plan to me Kurt. Many do permanently paralell thier packs in to pairs or whatever. You can connect them permanently in the method of your choice, be it solder, paralell adapters, whatever.
I leave mine seperated and use andersons for the connections so I have the maximum adaptability. I run the same batts on all kinds of different bikes, and constantly experiment with new ones.
I think the 12s configuration is nearly perfect for a bike to be ridden daily. Very simple to rig up to connect in series to ride, then disconnect and use the same plugs to charge in 6s by putting the appropriate connector on your two chargers. Only slightly more complicated than a typical lifepo4 charger.
Link to one decent way to rig two chargers. What charger you use is not the key, but rather buying something that can use most of the capacity of the commonly avaliable 350 watt power supplies. So two 150 watt chargers works good, or a 300 watt charger than can do 12s, etc. viewtopic.php?f=14&t=25005
Link to a good charger store in the US. http://epbuddy.com/index.php?main_page= ... h9lp913q46
THE LIPO RULES. NEVER ABOVE 4.3V NEVER BELOW 2.7V DON'T PUNCTURE
Ideal charging /discharging range for Lipo, 3.65v minimum 4.1v maximum
See battery technology section, FAQ thread at the top of the page for lipo noob info.