The DJI Osmo cameras have not been as popular as GoPro for FPV use, the new action 3 is again an improvement but I feel still maybe behind GoPro still? Plus it will be hard to compete with teh availabilty of mounts, and filters for Gopro in the FPV community.
The one thing it has going for it, is that its around £90 cheaper than the GoPro 11?