Not used the Khatoola spikes (Full Moon Addict has) but have a set of Yaks that i bought in the Alps. Very light and pack small. I carry them during mid week and weekend winter runs in the Lakes and was thinking of carrying them for a mid winter solo BG, just in case.
As regards schedules and timings, not too sure yet. But glad you've started this thread. Will keep a check on this one.