I actually tried playing germans skipping T1, pio+222 spam, and it's a high risk strat:
if your conscripts are outnumbered by pios just go cap something else, denying fuel will slow down sc spam, denying ammo will prevent upgunning and reduce pgrens bundle nades, be aware of this since it will influence what you will see fielded afterwards.
vs 222s at long distance if you keep the conscripts in cover they will take very little damage.
It's very important for the german to get a lot of infantry kills with the scout cars at this moment so he might get frustrated and push them a little too forward in AT nade range, just stay in cover and wait for this moment.
if scout cars don't succeed his only choice will be to spam pgrens, so stop spamming conscripts and remember that there are no fausts around so your m3s will have free reign over unsupported pios and pgs (just keep conscripts at the back ready to nade chasing upgunned scs).
Don't know if M3 gives a malus or the actual snipers are considered moving, therefore receiving reduced accuracy, what it matters to me is knowing that they do miss in that situation.
(sorry if I base my knowledge on actually playing the game and not on spending my time on excel spreadsheets)