The bolt-on and quick release axles are the same strength and I never broke
a spoke on the hub.
Note that when the hub was quick release, the wheelset was used on a
now-sold Sam Hillborne (actually two different now-sold Sam Hillborne
frames), a Betty Foy and the Mystery Bike / Protoveloosa. I w
May I ask, what did you hope to gain from the switch?
Are you breaking spokes and noticing wheel flex on the quick release axle?
If so, I'm not sure the Hillibike is what you need. Perhaps a smaller
diameter wheel, not a solid axle, would provide the strength you need.
Cheers,
Patrick
On Tu