bypass the spirit requirements for spirit gems with infernalist demon form

(Please dont fix since having no spirit gems sucks on demon form)
It's very easy to do, but it takes around 20+ seconds each time because Demon Form has a long cooldown.

Note: You can’t go into the negative for Spirit. You can only force a Spirit Gem to activate by using your Spirit, which also allows you to enter Demon Form.

Steps:

Enter Human Form and wait 20 seconds for Demon Form to come off cooldown.
Remove your Spirit Gem and have it sit on your cursor (ensure Spirit is activated while doing this).
Activate Demon Form.
Place the Spirit Gem back into your inventory.
Enjoy – you can now use a Spirit Gem while in Demon Form, so you no longer feel limited by Spirit.
On Demon Form:

To be honest, using Demon Form in early access feels underwhelming. It requires a minimum of 75 life regeneration on gear and causes you to lose most of your weapon's power in exchange for cast speed (which is extremely slow, around 1 second per spell). If you get hit, your cast instantly stops, and even with a little added damage from my weapon, it doesn’t feel great. The dodge is useful, though, as it allows you to move around at a reasonable speed.

Additionally, you need to stack a lot of resistances, or you'll just get one-shot.

Bug Report – Fireball:

There might be a bug with Fireball. I’ve managed to get up to 169 projectiles on screen at once when lucky, and I’ve even crashed a few players when helping them with bosses because of it.

If you’d like a demonstration, just let me know!

Final Note:

Love the game, GGG! It's great and has a lot of potential. While I think there’s room for improvement, I’m not here to suggest changes – just submitting this bug report. Good luck fixing all the bugs in early access!

Cannibalism does not work with Demon Form.

Also, nowhere does it mention that Demon Form doubles your skill cost. This increase isn't related to gem levels, as even when I use a +5 weapon, the cost only increases slightly. It would have been helpful to know this before fully committing to a Demon Caster build.