One of the reasons I sold my Concourse. Just changing the oil was a PIA.
Which model?
On my 1400s: Loosen drain bolt, place pan underneath sump, remove drain bolt and let oil drain. Loosen oil filter with filter wrench, remove filter and let drain into pan. Prime new oil filter, replace drain bolt (use new sealing washer) and torque to specified value. Install oil filter; tighten to recommended torque value (or until snug), remove filler cap and fill with indicated quantity of oil.
It took me about as long to type this out as it does to change oil on a C14. Same tools (17mm socket, torque wrench, ratchet, oil filter wrench) as are used with my Valkyries and the procedure takes roughly the same amount of time.
Granted, a valve lash inspection/adjustment on a C10 or C14 is a bit of a process but it's not insurmountable - and only has to be done every 15k.