It all depends on what your cash sources are, but I'm debating quitting my job in the next couple of years to enjoy a mini partial FI spree(GI bill), and if I did do that, then during that time I would roll over enough from my 401k into the ROTH pipeline to max my ROTH.
But like I said, it depends on the whole of your finances. I'd do that because I like roth money more then I like 401k money, and I couldn't fund it without having some sort of income, and I'm 25, so wherever you are in life changes your thoughts on such matters a lot.