That would depend on the amp used and how it's played. Using one of the low powered amps popular these days, anywhere from 2-15 watts, they should be fine, even if the amp is cranked all the time. With a higher power amp, up to 60 watts or so, they'd still be fine, so long as the signal is kept clean, as with acoustic guitar.
Put a Beta Lead on them and crank it up, and no, they won't last long.