Yes you can!
Please keep in mind that you may need to reset iMessage after installing your eSIM. You can do so by following the steps below:
1. Go to Settings on your device
2. Go to Messages
3. Toggle iMessage OFF
4. Toggle iMessage back to ON
5. Tap on Send & Receive
6. Uncheck your number and make sure your email address is checked. This way, you’ll be able to send and receive iMessages with only a data connection.
When you no longer have a need for your Bikago Mobile connection, and wish to switch back to your Primary SIM, you can do so by following these steps:
Settings > Messages > Send & Receive and check your phone number again.