A hike message sent to a non-hike user is automatically sent as a SMS. The non-hike user can reply to this SMS at Standard SMS Rates. The number that is displayed is hike VMN (Virtual Mobile Number). However, your name is also displayed so that the recipient knows who sent the message. So you will always come to know who that hiker is who is welcoming you to join the awesome world of hiking!! :)
For hike2SMS messages you get a message state "Tick" (Sent) only. Message states "Double Tick" and "Double Tick R" are currently available only for hike2hike messages. Thus a message state Tick (Sent) for your hike2SMS messages means your messages might have already delivered!