I love the siliconing, to me its the most satisfying part of any tile job cos it suddenly looks all clean and finished.
Got two FUGI kits for the profiling, but honestly, the best kit I ever had was a £4.99 one from Lidl, brilliant, and lasted much longer before fraying at the edges!
I didn't know Silicon was cancerous, I've probably ingested a few fingers full over the years, ouch!
I tried the spray bottle method once but it didn't go well for me, I guess I over sprayed maybe....
I squeeze it in thick, lick finger and run it along to push into joint, then finish with a single pass of a profiler. I use an old margarine tub to wipe my tool on (ooer!) and it helps me to keep clean!