Great advice.I've always used form-fitting leather holsters crafted to fit a specific gun. I used to buy from Lou Alessi in New York, but he passed in '09 I believe, so I've gotten my latest ones from Kramer Leather. From what I've gotten so far, they're very nice. Can't give any advice on Kydex, and what not.
The biggest problem I see with trying to use the same holster for the TCP and the EDC is the front of the slides. Not only are they shaped different, but the EDC's front cocking serrations might be in play also. If you want a good IWB holster in leather, shoot an email off to Kramer explaining to them what you want to do, and see what they say. I have two of their IWB #3 holsters, both in horsehide, one black and one mahogany. I'm satisfied.
DubfromGA, I came home a couple of days early, and even I'm amazed that I remembered to send you this. The first one is a Kramer for my ECP, the second is an Alessi for my Kimber Ultra CDP II, and the last one is a Kramer for my Sig P938. The Alessi I have had for about 15 years. The two Kramers are less than a month old. All have very good construction, but if you'll notice, the Alessi has more refined belt straps. I also liked the way that the straps on the Alessi are sown to a small tab, and therefore flip out of the way for polishing, whereas the Kramers are sown directly onto the holster main body and are more difficult to clean/polish behind. Also, the Alessi has become much softer over time and flattens more when you draw the gun, making it a little more difficult to re-holster. It still works well and holds the gun when held upside down though. The wrap-around strap on the top of the Kramers may help with that issue. Time will tell. This issue isn't that important to me because I really don't have to worry too much about re-holstering. Hope this is what you were asking for.
Oh, and something on the Kramers that I do like is the way they stamp the pistol's model on the back for an easy I.D. making a little easier if you have several holsters stowed away together.
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