Set currency by custom code in functions.php

Hello,

First of all, I just installed your plugin and it works perfectly. I like it. I have two questions:

1) Before this plugin I used WPML WCML currency plugin, which had possibility to set currency by custom code in functions.php, which is really helpful, because I have custom actions and process, before user gets correct currency.

After lookup in your code I saw: $this->settings->set_current_currency( $current_currency );

Is it possible to somehow use this in theme’s functions.php?

2) When I created order with WPML, it had option to choose a currency before creating an order in Admin. Can you add this feature? now I see that it creates order only by default currency.

Thanks!