Current iScroll position: ?

If you scroll the box below on a desktop browser, using the mousewheel or the scrollbar, the iScroll position (above) does not change from 0. If you scroll it by flicking on a mobile, the position does change. This is probably because we're not actually "using" iScroll on the desktop; the desktop browser is taking care of the scrolling for you. What I want to know is: how can I tell if I'm in that state? Because if I want to programmatically "scroll" the below box, I have to use myiscroll.scrollTo() if we are "using" iScroll, and set div.scrollTop if we're not.

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Lorem ipsum dolor sit amet, consectetur adipisicing elit. Saepe deleniti beatae placeat officia at iusto itaque excepturi dolorum expedita voluptatum rem nam magni ipsam. Qui eligendi veniam nesciunt deleniti perspiciatis.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Saepe deleniti beatae placeat officia at iusto itaque excepturi dolorum expedita voluptatum rem nam magni ipsam. Qui eligendi veniam nesciunt deleniti perspiciatis.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Saepe deleniti beatae placeat officia at iusto itaque excepturi dolorum expedita voluptatum rem nam magni ipsam. Qui eligendi veniam nesciunt deleniti perspiciatis.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Saepe deleniti beatae placeat officia at iusto itaque excepturi dolorum expedita voluptatum rem nam magni ipsam. Qui eligendi veniam nesciunt deleniti perspiciatis.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Saepe deleniti beatae placeat officia at iusto itaque excepturi dolorum expedita voluptatum rem nam magni ipsam. Qui eligendi veniam nesciunt deleniti perspiciatis.