cannot get it work with 3.7

the further digging leads me to the fact that it is impossible to use $user_ID template redirection becase on the first call when TEMPLATEPATH constant is defined

define('TEMPLATEPATH', get_template_directory());

in /wp-includes/default-constants.php no active user is set up.

the solution is to use:

$user= wp_get_current_user();
if ( isset($user->ID) &&  in_array( $user->ID, array( 2,3,4 ) ) )
		$template = 'classic';