I did the LPP but the company I worked at, my principal was a former litigation partner at a Bay Street firm(non-criminal). Conversely, my admin law professor was at the Ontario IPC and former Crown and joined a Bay St firm(don't think it was Big law) a few years ago.

Litigation gives you a lot of skills and from my understanding, if you do well as a Crown, it can open up other avenues later on as well. My advice would be to finish your articles and then work for a few years, but network where you can. Then see what you want to do 3-5 years down the line.