IF you want to be able to run tubeless tires on your 650 (I assume so you can temporally fix a flat with a plug)
then consider what every MC manufacturer did, put cast aluminum wheels on the bike instead of spokes.
The bike can certainly handle a bit more weight in the wheels, and it will make the steering feel more stable with more weight in the wheels or tires.
I don't know if the amount of time you would spend making a spoke wheel hold air without tubes, would be offset by being able to plug a flat, instead of having someone with a trailer or pickup come and haul your bike to get the tire replaced.
If you put a plug in a tire you really need to take the tire off the rim and put a patch inside it anyway. Most riders would replace a punctured tire no matter what, so for all your efforts the return on your invested time might not be all that much better.
Spoke wheels have a great vintage MC look, and cast aluminum wheels are virtually indestructible - so they both have merits.