I would not recommend a 3rd party 2x TC for any lens. The cost in image quality is too high. The Sony/Minolta 2x TC's will only work on the white G lenses with an IQ penalty. The TC hits the rear optic of the other lenses. The Sony/Minolta 1.4x TC's are much better but again, for the same reasons as the 2x, will only work on the white G lenses. 3rd party 1.4x TC's I have no experience of, but from what I have read, some can be of use, but with reduced image quality depending on the lens. A Macro lens would not be a good choice for a TC as they need to be really sharp and even the best 1.4x TC may reduce the IQ/sharpness to an unacceptable level.
Sony A7, A850, A77, A700 || Sony>> 70-300G, 28-75 f2.8 SAM, 16-80CZ, 50 f1.4, FE 28-70 OSS, FE 24-70CZ f4 OSS, LA-EA4 || Minolta>> 300 f4 G HS, 200 f2.8 G HS, 100 f2.8 (D) Macro, 50 f1.7, 28 f2.8, 28-135 f4-4.5, 70-210 f4, 500 f8 Reflex, TC x 1.4 HS, TC x 2 HS. || Sigma 21-35 f3.5-4.2. || Tamron SP 24-135.