XF 2.1 Anyway to have one more "extra.less" template?

[ShikiSuen]

I set my customized style as a substyle of the default one. Both of them have their extra.less file edited.
The default one contains webfont definitions which I only want to use on my website only, and the substyle is something I am gonna publish to somewhere else.
Since the extra.less contents of both styles do not append to each other, I tried to create a "webfont.less" template in the default style.
However, I found no way to let the "webfont.less" read by both styles.

Any suggestion?

 

[JoyFreak]

Try adding in Extra.less:

<xf:include template="webfont.less" />

 

[ShikiSuen]

Try adding in Extra.less:

Thanks. This looks way better than hacking into the meta template.