Is it cringe to get this phrase tattooed as a non-German person and does it have any controversial meanings?

I am a woman of Korean descent. My grandfather was a Korean coal miner in Germany the late 1960s and close to his passing even after he developed dementia he would say "Glück auf" to us at times. To my understanding it is a greeting between miners wishing successful and safe mining trips. Despite language barrier, Korean and German miners alike would greet each other this way. I love the historical context of this phrase and it is a phrase that motivates me in my daily life as a medical student.

If it is okay and not too cringe to get tattooed, what is the proper grammatical formatting? All together or with space in between?

Please and thank you. 🙏