Use 'em much? How does your experience compare with regular components, in regards to anything that might've caught your attention: performance, area, effective cost, etc.
Any opinions on design tools for them? I'm guessing most EDA packages don't have this, though many will support the structures (e.g., Altium lets me declare a net bridge and put whatever funky copper I want between pads, which would work well for printed RF components as well).
Anyone tried building them in two-sided PCBs? It occurs to me, to get any isolation clearance, the layout must extend pretty far beyond the core, which is going to do interesting things to leakage and EMI.
Tim