Hi Kelly
I'm a solicitor, so know how much of a struggle the whole law degree/lpc and training contract is. however, i went through it a few years ago now and obviously the financial climate has changed quite a bit.
Even 10 years ago, i had to wait 18 months to get a training contract but was lucky enough to work as a legal assistant in the meantime.
At our firm, we have a trainee, but, sadly, won't be offering her a job afterwards as finances mean that we cannot set anyone else on. so your Dh also has the difficulty of obtaining the employment after his training contract.
alot of it, however, does depend on the type of law he wishes to go into. Our firm mainly does legal aid work, so things are extremely bleak at the moment.
as far as your other points, the LPC doesn't expire, but the longer it takes after he has completed it to finding a training contract, potential employers may be hesitant to set him on.
However, on the bright side, a law degree is a great degree to have as it is an "all-rounder" and will provide him with many different skills.
sorry, to be so pessimistic, but the legal profession is sttruggling at the moment. However, i would probably advise him to do the law degree and try and obtain a training contract during that time.
HTH