I, too, ran out of patience.
I pre-ordered the Empulse immediately after I saw the unveiling in July of 2010 at Laguna Seca:
At the unveiling I was told that the bike would be available by the following summer. I waited... but when the Zero ZF9 was announced a year and a half later, I placed a pre-order on it too. I decided I would buy whichever bike came out first.
I placed the Zero pre-order in November 2011. I was told that the bike would be available the following March. Exactly two months later (in January!) I received a phone call that my bike was ready to pick up. I was flabbergasted. I just expected that the availability would be delayed - like so many EV promises.
My next concern was: would I regret the decision? The Zero and Brammo specs were similar, the prices the same... surely as soon as I rode the Zero home I would get a phone call from Brammo saying my Empulse was ready!
But now, after Brammo's announcement of more delays and increased costs, and after almost four months and 4,000 miles of riding the Zero, it seems like I made the right decision. I can't imagine waiting another year and paying an additional $3,000 to get my Empulse. I haven't heard a word from Brammo in any case.
I still look forward to test-riding the Empulse next year (?) - it will be an interesting comparison - by then I will have about 12,000 EV miles on my Zero ;-)