I am less concerned with speaking about specific companies. Seeing as PCI is not in the miniature business, I can't imagine Henry & Co would have any issues with it.
Mierce Miniatures produces some very high quality miniatures for a Warhammer type game they produce. Their website is a little clunky, and they do make a lot of 'monstrous' minis, but it is definitely worth a look. For a good example of some of their line, take a look at
Eirik Longaxe for a Skohir type character, or perhaps some of their
Angelcynn line for the val'Dellenov.
Mierce Miniatures recently finished a very successful
Kickstarter, for which a large number of very detailed minis are currently being produced. Take a look at their Byzantii units for some good legionnaire miniatures. One of the things I really like is the line of 'General' miniatures they are making, in which the same figure is sculpted both standing alone, and mounted. Scroll down about halfway on the Kickstarter page. I believe they are planning a second Kickstarter fairly soon.
Scibor Miniatures is another one worth mentioning. They have a line of really excellent dwarves, and the detail on all of their minis is outstanding. My only real criticism is that a lot of their armours are 'high fantasy', in so far as being large, and not realistic. They do have some minis that may be good for
Witchhunter. These guys also make some really fantastic scenic bases.