I suspect that once the US market orders have been fulfilled, FX's position may change.
I wouldn't want one; aside from the fact I think they're ugly. Too many lay people would assume assault rifle and phone the Police, who'd send out the tactical firearms people. Not worth the stress and bother.
I know someone with a .22LR MP5 look-a-like and the Police have been called out twice to him. One landowner refused him permission, and access through, because they perceived him as a loony tune Rambo.
FAC application can take many months, depending upon area, how busy they are, or even how inexperienced Police are....and then there is the applicant!. Currently £88 for first 5 years. The process isn't as bad as many people think. A reasonably intelligent person, without a violent criminal record, who can demonstrate a need for a firearm and show that they have basic firearm handling knowledge/abilities ..... should have no problem. You have to have a well secured cabinet etc, but that is a minor issue.