I eager to try out to edit X-T3 footage on an iPad Pro with Lumafusion. The iPad has a dedicated h265 decoder/encoder in the SOC. The rumoured iPad Pro with an A12X chip will be a beast. For editing family, or personal stuff on the go this could be good. I edited a bit of 4k h265 iPhone X Footage on an iPad Pro 9.7 (2016 model) with Lumafusion which worked great. My old Macbook Pro 13" from 2013 couldn't handle it.
There is still missing a bit from Lumafusion, but it's quite good for an iPad App. Don't know it the high bitrates could be a problem.
When I'm in vacation a leave my laptop at home and only take my IPad with me. The X-T3 with one to the new rumored 11" iPad Pros could be a really cool small an powerfull mobile package.
Time that Apple brings Final Cut X to the iPad!