I run a waterless DI press, on a glossy art paper style job, I would expect to get at least 5-7k before a blanket clean is needed, I can push it further, maybe 10k if it's not a mega quality job. I use IR drying and very low powder. On uncoated stocks, it's generally less due to paper fibre etc.
I would be slightly concerned about 2k blanket washings but I have done so, 1k was done before on a tough job.