I'm not considering it at all. The biggest reason is that the CPA designation is so incredibly powerful that it basically stands alone (unless I were to get the CFA), no offense to EAs. The other major problem is that I'd have to remain an AICPA member, which I don't plan on doing when my renewal comes due.
Frankly, I don't expect the AICPA's marketing efforts to resonate in the public consciousness with this designation.
Really, the only thing my business cards need to say is Missing Donut, CPA. For better or worse, the CPA part implies that I would inherently be a CGMA in the way I would inherently be a tax expert. To a large degree, public perception is more important in this regard than actual ability.
(My background, as it might be relevant: CPA who left public accounting for a full-time position in the private sector, where I spend more time on the cost/management side than the financial and tax side combined. I'm also in the start-up stages of my own firm to moonlight.)