I would still recommend use vars over this.
First, I don't like the idea of a module that rather sneakilly sometimes turns off
use strict "vars". If your development moves
to a pre-5.6 version of Perl, you could easily not notice that your innocuous use Our has now disabled your use strict.pm until you waste a couple of days chasing the kind of bug that use strict.pm makes obvious (the reason you are supposed to use strict.pm).
I certainly don't consider this risk worth the very minor speed improvement which is the only advantage to our over use vars.
Also, if you are supporting pre-5.6 versions of Perl, you will be testing with pre-5.6 which may require some development in pre-5.6 versions which you shouldn't be doing without use strict.pm.
So my problems with this approach are quite small but I consider them huge compared to the tiny, tiny "problem" that they solve -- being able to use our instead of use vars. If you are firmly into 5.6-and-later Perl and choose to use our, then these provide a nice way to be pollite to people who aren't.
I will continue to do use vars until Perl supports non-blocked compile-time code (or another soltution) for being able to conditionally use our (or until pre-5.6 Perl becomes old enough that I never run into it anymore).
(but my friends call me "Tye")
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