You are exempt the 1500' when SVFR in accordance with ATC instructions BUT NOT if unable to clear the congested area in the event of a power failure!
In total agreement with this but has anybody been unable to clear the congested area in the event of a power failure? Over Warrington at 1250, engine has had enough and goes to sleep an fails to restart. The rules and regs are there to enhance safety but when it happens for real, getting your machine on the ground is more important and you can address the regs later.