This applicator is best called a pipette, as it is nothing more than a fine-gauge blunt needle fused to a glass tube. It works very well- hold it horizontally and the cement stays in the glass tube. Tip it down a bit and a small drop will form at the end. Apply it to a seam, THEN tip it slightly down, and you get cement only in the seam with no mess.
It does clog very easily, both with dissolved plastic and with any crud you might have in your liquid cement (usually caused by dipping a not-so-clean brush in the cement). It cuts way down on losing cement to evaporation, because it will stay in the pipette for a long time before it dries. I've had to blow it out with my airbrush a few times when it got clogged.
I see that Flexifile now has a bottle to ease filling of the applicator. I think I can fill it with a syringe, also.
Even though it's a bit fiddly at times, I not only would recommend it to a friend, I already have!