Hello,
Yes, i've planned to integrate in the future an option to be able to use it or keep iCagenda system.
The reason for iCagenda dedicated pagination was that the one from Joomla 2.5 not very nice, and until iCagenda 3.7, the extension was crossplatform 2.5/3
Another reason is that not all site templates manage well the core Bootstrapped pagination from Joomla.
Too, iCagenda with its multiple dates per event system, does not act exactly as for an articles list, as it do a second process to duplicate items when multiple dates.
So, not as simple to be integrated as it could be viewed in core Joomla com_content component
Best regards,
Cyril