Depends- are you using white, or gray conduit? I just ran that cable through gray 2" and after worrying that the landscapers may have damaged it when I wasn't there, I was happy to see that it was totally dry inside, even after going through the last Winter, which seemed like it would never freakin' end.

How long is the conduit and how many bends? What diameter? Make sure to spray silicone into the conduit before you feed the cable- it will pull a lot easier and you'll put a lot less stress on the cable.

If it's dry, it should last pretty long. I don't look at DB applications as literally 'permanent', so I make it easier to re-run, if it fails.