Is it safe to allow customers to change currencies on checkout pages?

[dailce]

Is it safe to allow customers to change currencies on checkout pages?

 

For instance if the customer is on page checkout_payment.php or checkout_shipping.php, is it ok for me to include the currency box so they can change currencies if they want to?

 

I'm asking becuase the deflaut columright has:

 

if (substr(basename($PHP_SELF), 0, 8) != 'checkout') {

include(DIR_WS_BOXES . 'languages.php');

include(DIR_WS_BOXES . 'currencies.php');

}

[dailce]

Well I have just changed it to:

 

if (substr(basename($PHP_SELF), 0, 21) != 'checkout_confirmation') {

include(DIR_WS_BOXES . 'languages.php');

include(DIR_WS_BOXES . 'currencies.php');

}

 

If seems to be working fine, but WILL this cause problems?