Using the Tagdiv comment element…but wrapped in if statement

Hello Tagdiv Support,

What we are trying to do is use the TagDiv Comment element(shortcode) in the Single Post Template….. However, we are using a Paywall plugin (Leaky Paywall) and we want to limit commenting to Logged in Paywall users. So, in general terms…with a twentysomething theme it would be something like :

PHP code :

if (leaky_paywall_has_user_paid()) {
comments_template(”, true);
} else {
echo ‘<h3>You must Subscribe to view and leave a comment.</h3>’;
}

Is there something like this we can add to the Single Post Template with the Tagdiv comment shortcode? If so, where would we do that? And would it be overwritten with Theme updates?

Thanks for your time 🙂
Tim