And what about the new comers who will download the game, check the boutique and see them there - they will learn from forum that they can test them now but to do so they need to be subscribed first. Here's where issue appear: they will have to sub (and get the multimen) before testing it!
The Knight of Astrub will always be free and available to everyone, presumably even those unsubbed as it's an astrub area quest to obtain him.
One of the four elemental multimen will be free each week.
So what we can test knight of asturb if we cant test the spells of other sidekicks?
In order to choose a class - one need to investigate the spells that the class have. It is the same for Multimen. We can test them NOW, but we won't be able to test them later - correct me if i am wrong about it, Ankama.
My point is that i don't want to sub now to test them nor i want to buy them now. But i might want them once i sub, propably in next year, but then i won't have a chance to test them before buying them. Thats the issue.
Like I said, one of the four elemental multimen will be free each week for testing. The only ones you can't test are shadow and luminos, evidently.
And you can always look at all potential sidekicks and look at their spells via the sidekick interface, which shows ones you own and ones you don't, what all their spells are and their effects, even if you don't own them.