Yep I've been stealth at introduction at a few of my workplaces.
Simply enough get to know these people don't mention your past, and before you know it your stealth. Ultimately Be stealth until you get a feel for the environment then make your choices accordingly and do whatever makes your life easier.
Auntie Annies: I didn't tell anyone primarily because I wasn't there long enough I worked there for 1 month. The lady was crazy and she had an absurd staff turn over the longest serving employee had worked there 3 months.
Tescos Supermarket: I didn't tell anyone in the end after 6 months of working there. I didn't like them enough. The managers were abusive and frankly nobody had a chance to get to know me well enough.
Dichmanns Store: I didn't tell anyone until 4 months in. Here it was different, my co-workers were friendly as was my story manager, and we'd occasionally hang out after work as we were all similar ages, this is where I ran into the everyday problems of stealth as in I had to lie about my past. After I applied for another job in my desired career field. I realized these people who were quickly becoming my friends knew very little about me what would happen if I was successful? Would I just leave and forget them... It's not like they really knew me. I made the choice to leak this information about myself, most were completely astonished but one girl said she suspected but didn't know for sure. I'm still friends with them now.
FleetBio:
Similar to dichemanns people were kind and nice to me. I was abit torn here, I have a prejudice against religious people because I've suffered at the hands of them so this delayed my coming out by several months. and some of my co-workers were very Christian despite them begin scientists which surprised me. I kept silent for 4 months then I tested the water by speaking with our youngest and second newest labtech and telling her, she was accepting I also explained why I had hesitations. Eventually a couple months later I had a second wave of telling most everyone else... I did this because I had periodic hospital and GP visits and my boss who is a nice guy was genuinely concerned about my health although he didn't pry, because I needed to goto the doctor so often there was a rumour I might have cancer or something else serious. when this rumour reached back to me. I realized I had to put an end to it.