Hi Sango, we have similar stats so maybe I can help.
I have a little list of my weights, maybe it'll show some semblance of what can happen. Just an example.
2-Oct 160.000 -Start induction
20-Oct 149.500
27-Oct 147.000 -Start OWL
10-Nov 145.500
14-Nov 144.500
1-Dec 143.000
13-Dec 141.000 -Ate a little wrong during the holidays
5-Jan 139.500 -back to induction 1/1
7-Jan 139.000
8-Jan 137.500
12-Jan 136.500
And I've yo-yoed from 136 (current weight this morning!) to about 142 in the past 6 months during OWL. I don't really consider it a stall since I lost inches, fell off the wagon, and am really near goal weight.
So yeah, you can lose pretty decently on OWL, I think. I wasn't very strict about it, it's all up to you.
Hope that helps a tiny bit.