After having dealt with every major plastic troop choice in the Daemon army, I have to say that the Plaguebearers are by far the easiest to work with. There aren't many insufferable spiky bits (bloodletters), no delicate hair (daemonettes), and no jewelry to carefully carve around (horrors).
The mold lines are in logical & unobtrusive places, and the spots where the mini contacts the sprue are easy to clean (the only minor exception to this is that on several chest pieces there are connections on the "side boob" that requires a little more finesse). Plus, since the bearers themselves are rather round I could easily use my file in most instances.
Here's the basic Plaguebearer. Not very pretty, but pretty damn cool.
As expected, there's an unattractive seam where the chest piece connects to the body, but there's an easy fix for that.
You start with a small amount of recently mixed greenstuff. I mean small. Like maybe half the size of a krak grenade.
1. First you roll it into a thin string, divide it up, and place it on the largest of the two bits, where you want to fix the seam. The goal is to place greenstuff on the mini where the two pieces connect, so the epoxy will squeeze out.
Here you see that I've placed my greenstuff on the sides of the chest, and at the base of the stomach since that's where the seam is most noticeable.
2. Then you push the two together. Start by applying glue to the second bit. I usually place the glue in places where I don't already have greenstuff, so here I put glue around the collarbone and hips.
When you push the minis together the greenstuff will squeeze out from the seam, and the glue will keep the pieces together.
3. Take your finger and smooth the greenstuff evenly over the area. I've found it works best to lick my thumb and press down a bit, then spread it around with little circular motions. This is the reason i don't want glue where the greenstuff is, since you could end up gluing yourself to the mini while smoothing it with your finger.
This technique is a wonder when it comes to non-armored minis that are meant to look organic. A seam can really break up the look of a mini, so this helps give it a more natural look.