This set-up looks OK, but certainly not amazing. I'm sure that it will work (just as vaping off aluminium or the crack/meth pipes does work) but it sure needs good, fine-tuned technique to produce consistent results. Some people can just do it and can use this (or similar methods) with great success, others just opt for set-ups that are far more fool-proof.
So basically it's worth trying and it's up to you to decide how good that is.
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