Yes, alchemers have powerful charge attacks. So do Magnus-style and Autogun-style guns. How do they compare, in your opinion?
Do you know how to switch-shoot alchemers? Because that can yield even more damage than charging.
But this part of your post makes no sense to me:
the only other downside may be the lose in dps compared to arcana and blitz (clockworks)
Isn't a loss of DPS a pretty big downside? I mean, if you think that alchemers are overpowered, and these other guns do even more damage, then aren't these other guns worrisome too?