In my opinion, the designation is worth doing if money is not a concern because it was pretty easy but if you put it against the CFA (as in CFA or CAIA rather than CFA and CAIA) then i will say do the CFA. CAIA is a nice compliment.
Bargin? I suppose you mean that it is undervalued now so do it now before everybody jumps in. In that sense, yes, but there are no guarantees that this designation will grow in a way CFA has. With that said, no harm in doing it now.
If you are just thinking about CAIA then go for it mate
If you are thinking CFA or CAIA then go CFA.
I did the following in 2 years CFA lvl1, CAIA lvl1, FRM Full, CAIA lvl2 and now i have lost the legs/motivation to complete the CFA. Thinking back, i may have been better to focus my attention on CFA and get it done in 2.5 years.