Hmmm... I reckon it would taste pretty awful, and you could be spitting bearing fragments out for a week.
Rdub -as I gather from other threads, around £1500 for a new FD, around £330 for a re-build.
My re-built FD comes with 2 years warranty, as per UK law (apparently), because I paid in part for the work.
As far as I'm concerned, this kinda takes the pressure off the problem. £330 every two years is no more than I'd pay for chain & sprockets. Far from ideal, but perhaps a bearable issue. Can't say I won't worry about it on very long trips though.