Why work with Flash

All is sharp all is clear this is darn important if you have many human figures in the frame.

Fill flash issue due to Sync speed..
As some have commented use ND filter but I have not used it yet. Might try.

Being Strobed by a DSLR VS a cute/ cool / etc Leica might not have as much backlash? plus a sheepish grin, i think i can get away with a lot.

For non pro work get the sf 24D should be fine plus a sync cord.
SF 58 is really over kill.