Sounds tough, I suppose it all comes to the eyes of the officer...
Only until he hands you the ticket, at which point it'll be dismissed in court. Properly-holstered firearms are not considered to be "concealed," even if the holster covers the firearm from trigger to the end of the barrel. So long as the handle remains visible, the firearm is not concealed.
Some folks have attempted to claim the entire holster must remain visible, thereby rendering IWB holsters as "concealed," but that hasn't flown with the courts. I had similar concerns as my firearm, holster, pants, and sweater are black, and I was concerned that anywhere other than a brightly-lit area an LEO might attempt to claim I was "concealing by means of camoflague." However, I talked with a friend of mine who is a judge in the criminal courts, and he said no, adding that gang carry isn't concealed, either, unless they cover the handgrip with part of their clothing.
I would work on getting that CC permit asap so you don't have to worry about it at all. That's what I did (waiting on it now...90 days takes forever lol...) thankfully it's been a very nice winter here and little snow and in the 50s so a sweater keeps me nice and warm till the sun goes down. Still it's a tough call, I wouldn't risk it, fighting the system can be a huge burden to your wallet.
That's the flipside, and you're right in that fighting the system can be many times more expensive than the $4.16 per month ($250 for 5 years) required for the CBI, the permit application fee, and the firearms safety class. And you can often find half-off deals on the latter.