Anchoring + Quickening, Two tastes that go great together? Options

[Tashiro]

Way back in 1E Shadowrun, you could create an anchor as an indefinite effect -- the detection goes off, causing the effect to trigger. As long as the detection continues to 'ping', the effect would as well. In 3E and 4E, this doesn't work. Anchors are 1-shot deals, which cost 1 karma for each one you want to put on.

What I'm considering, however, is using Quickening with an Anchor. You pay the 1 karma for the anchor, and you pay the other amount of karma for any spells which are tied to it. IE, the optional detection spell which could be used to detect the incoming threat, and the reactionary spell which responds when triggered. So, if you want a mentally triggered fireball, you pay the karma for the trigger and for the quicken, and congrats. Or a detection spell plus an anti-bullet barrier.

I think the caveat I'd put in is that non-sustained spells (like combat spells) would trigger a drain each time it goes off, perhaps.

Thoughts?