I've had these clips now a few years, and use them occasionally. they still hold the mics very well. They are perfect for trying out some MS work (I used them with Sennheiser MKH mics) either on a stand, or in a blimp you already have. (I use mine in a Rode blimp MkII)
If you really are out in the field, running and gunning for sounds, or on a somewhat more extended field recording trip, I would however choose for a more dedicated MS suspension that goes with your blimp, to make sure the mic stays in the correct position. However, I've had had no problems so far.