update user custom field w/ other db field

I do not want my user to use the default registration form (needs to be seamless) so I have created a user registration form with gravity forms + user registration add-on. Problem is that I have custom user meta that I’d like for the user to be able to update in their profile form and gravity forms doesn’t have a form option that allows you to change the user info after submission. The user meta key for my “Company” field with Gravity forms is different than the user meta key for my “Company” custom field. So I can either use a registration form through s2member or overwrite the s2member custom field with the gravity forms field.
Is there a s2member registration form that I can use on a page instead of sending the user to the admin registration area (that looks similar to the admin login page)?
Currently my solution is to attempt to overwrite the s2member custom field. I am trying this:
function set_s2_user_company($entry, $form){
global $current_user;
get_currentuserinfo();
$s2comp = get_user_field (“Company”);
if ($s2comp == ”) { update_user_option($current_user->user_ID, ‘acM_s2member_custom_fields’, $entry[‘6’]); }
}
add_action(“gform_after_submission”, “set_s2_user_company”, 10, 2);

The “gform_after_submission” action hook executes after the registration form submission. $entry[‘6’] is the “Company” form field from the registration form.
I realize you aren’t going to support gravity form functionality, but I am looking for advice on how to overwrite/create the s2member custom field in the database from a form submission outside of the s2member forms.
ideally, I could just use the registration form for s2member within a page, since I can already pre-populate my gravity forms with my s2member data.
Please help. Thanks!
check out the site: http://www.envisiondemo.com/acumen

I would also be interested in this answer.