I have used WLP 036 (Dusseldorf Alt) in an alt (and IPA), and found it to be very similar to 1450. I really enjoy it, and would make it again, but I prefer 1007 for the reason that Denny stated. WLP036 just wasn't crisp enough. So, if 1450 is what you have, and want to make an alt with it, I think you will be pleased with the results.