I do! I seem to get a very faint line on them no matter when I test in my cycle, every cycle.
I think the key with ICs, or with any test really, is progression. From my experience with a true BFP, there was a noticeable darkening of the tests from day to day when I was pregnant. When not pregnant, I get these tiny sketchy lines day after day with no progress.
Your test on post #10 certainly looked like a true line to me. I would expect to see progress form that test but in the early stages, so much can affect test darkness. Was your urine dilute when you took the test above?