Well, I've tried one signal from MC Whale, long BTC.
It is convenient that a deal can be concluded directly from the signal, and this happens immediately - click and you are in position. What is extremely inconvenient, however, is that this signal disappears, and if you haven't marked a target and a stop in advance, you already have to interpret - you can't follow them, because they aren't there.
There is no history of signals, even the last ones, let's say 5. Or at least on that one (or more) where you have opened a position.
That's an initial impression, when I have more experience I will share here.
Edit:
Well, that was my bad: there are no recommendations about SL and TP in the signals. One must use a common sense about these. But still, I believe that a history of signals (includein g time stamp when they started) could help evaluating and assessment of.