I can't tell you what it'll be like with that much resistance, but just for kicks, you'd be remiss to not take that same coil and double it on a mech, just for one tank.
Take your bestest juice, load it in a kayfun, load it in that magma, you'd be at .6ohms, and see the difference. I'm curious as to the difference between a single and dual coil just in the magma. There's no reason why I haven't made the comparison myself. Other than I'm inherently lazy.
I'd be going against the grain.
That being said, I'll do as you suggested, build a sub-ohm'er and give it a try. It'll probably be a dual 1.6 ohm for a .8 or so result. I don't want to stray too too far from my comfort zone.
I also have a bunch of juices from River Bottom Fog sauce that don't play nice in tanks, so I'll be using them in the Magma for sure. If I like it, I'll definitely be picking up a couple more from from Slowtech. At $15 or so for the 1:1, they won't break the bank.
He wanted me to have his authentic Gus Lord mech and authentic KFL so he sent them to me. They are awesome and I will vape them proudly. Such a nice gift. Thanks sweetheart!!
