Again, I can really use ETH markets right now, I don't hold any BTC whatsoever at the moment and I won't be buying any anytime soon after all this uncertainty passes. So in terms of deposits/withdrawals for Lykke we are a little cornered right now. I don't mind using ETH or XRP for fast transactions and then convert to fiat or lkk inside the app but I just don't trust Bitcoin right now with all the delays and volatility, you can lose a lot of money just waiting for it to confirm.
It's incredible they've come to this situation, this should be a very humbling lesson for many.
I have done some transactions with Bitcoin. It was fast the few times I tried it. I am talking within 10 minutes. I know bitcoin block chain had some sort of attack I believe a week ago and it slowed down transactions for a day or 2. But I haven't had any problems with the Lykke exchange. It runs pretty smoothly. They will be implementing ethereum btw.