Run water heater via inverter?

[Bash]

I've just installed a water heater (calorifier) that only draws 750 watts at 115v AC. I have a 2500-watt inverter running off two AGM 210AH 4Ds on a 12v system. I run two 130-watt solar panels (total of 16 amps) backed up by a 200-watt wind generator.

So, during the summer months I have power to spare while on the hook despite running a fridge and a separate, stand-alone freezer. My batteries are usually up to full charge by noon, and the wind/solar charge regulators shut the charging system down periodically between noon and the cocktail hour.

Given the above, is there any reason I shouldn't run the water heater off the inverter between 1200-1300h every day to keep hot water in the fresh-water pressure system?