3-Pack Bundle - Zig Memory System 2-Way Squeeze and Roll Glue Pen

Is this the ballpoint tip?

Having problems getting the glue to flow (there is plenty shown in the tube} even with squeezing the bladder. Should I be cleaning the tip after use?

Will this work with embossing powder? Do you have a better suggestion for simple line drawings (words) needing to be embossed with embossing powder?

Would these work for quilling? Gluing paper on its edge?