Let's say I'm using the calligraphic tool

The closest I could find in the manual is this
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Shapes.html#CurrentStyle
But I'd rather not open a dialog and press a button each time I want to switch from "thin black line" to "thick grey line". Ideally it would be, draw, click on line having desired style, click command to pick style up, draw.
This is a very simple thing and I'm sure has an easy solution but I can't seem to find it. (I also don't want to "paste the style" to an already drawn line, I want to switch line style first, then draw)
Thanks in advance & Regards
Cris