I still have an eye on IOTA since months, but I am too much into Byteball. It definitely makes more since to hold all my btc (or even buy more) and get free byteballs, than sell a little bit and buy IOTA instead.
But I think, when the Byteball giveaway ends, there can be a little switch over to IOTA. And that will be the point where I maybe start to invest a little bit.
Is there a date for the ending of the giveaway?
So far they have distributed around 36.6% percentage of coins, but they are planning to have more rounds until they distribute all 98%. You can find more details on their site. Yes, it is a good way to get some free coins of byteball. But if one wait to until they receive all free coins to invest in IOTA may be too late and end up paying more for IOTA. Best is buy small quantities whenever prices go down.