Growing-out males is a good way to coat your growroom surfaces with pollen, which can and will affect future grows. Smoking male leaves is (almost) like smoking the un-cured female leaves, but smoking fans from either tastes like crap. And since fans are the nutrient storehouse for the plants, it will likely have that ammonia aftertaste from the nutrients.
If it's all you have...you gotta do what you gotta do. I've never smoked a male that made me want to do it again on a regular basis, and it's no replacement for the medicative properties of the females. But yes...they can get you high if mature enough.

Quantity of fingers is determined by maturity and strain. It has nothing to do with hermaphrodism.

The white hairs (pistils) are not a good indicator of plant maturity. They can be damaged and die-off throughout the grow from wind, dust, leaves rubbing them all the time, lights too close, being crushed as you check to see how firm your buds are...
Trichome development and maturity is a much better indicator of plant maturity.
A 5X magnifying glass works great to check trichomes, but a $13.00 pocket microscope from Radio Shack works even better. :thumbsup: