30 button Anglo, like my own, considering a beginner's first getting their hands on one( any make).. could seem a little daunting; with all the buttons at both sides, and then once they realise two notes are on the one button, during use!
A lot of people consider them ( I believe unfavourably) easier to play, but we know, on the net, of course this is NOT always the case.
Some instructors say that to help visualise the Anglo button arrangement as vertically arranged, as viewed from the player; but I have always thought it much simpler to see them on a horizontal axis, when holding up, in order to get to know the buttons.
Once seeing the three 'horizontal' rows with their 5 buttons ( for nearly every finger, ).. I think is a more practical way of aiding someone's first visualising the instrument, than being seen as the other way on. It is more logical, and relates each button to a finger.
This regardless of how you play them regarding position ( sitting, standing etc..).