Yes, I can... but it depends on the lady, and the situation.
I posted earlier about a time early on when I had very sweet and sudden ejaculation (much to her surprise) into my girlfriend's mouth, as she was sucking me... not stroking me, just sucking, though I was stroking *her* and dipping my fingers inside her, and the combination was just too much.
https://en.zity.biz/index.php?mx=forum;ox=display;msg=956139;nox=1151851
My first wife was uninhibited in a lot of ways, but she didn't like giving fellatio. So I rarely asked. My second, current wife has certainly been willing, and would do it when I asked her (I have always loved reciprocating), but she isn't very good at fellatio. No climaxes there.
More recently, after my wife mostly lost interest in intercourse (too painful), and told me sincerely to "get a girlfriend," there was an unexpected turning point, that allows me to answer the question in this thread.
I was receiving massage from a licensed massage therapist (not a prostitute), with whom I'm very close, and as she was working on my legs, she asked me how my recent checkup had gone. She knew I was having medical problems.
I told her that the doctors said I had a condition where I might lose sensitivity, and be unable to have sex any longer. She stopped, and her eyes got wide. She asked me for the details. I gave them.
She looked like she was going to cry. She walked over to the head of the massage table, bent down and kissed me. "Please let me try. I love you."
To my astonishment, she unbuttoned her dress and took it off. Then she unfastened her bra, slipped it off, and pulled down her panties. She stepped out of her panties and sandals. She had *never* stripped for me, before... and I'd been her client for eight years.
She was beautiful.
Completely naked, she leaned down and kissed me again, first my lips and then my nipples. Then, she lifted the towel away and started stroking my belly, kissing me there, too.
And then she kissed the tip of my now-hard cock.
I (and he) were so surprised that he jerked in the air, and a little cum flew out. She smiled.
"Let me. I love you."
I'm sure that if she had fellated me then, I would have come sweetly and intensely in her mouth. But she brought me to climax with her hands. Either way, it was wonderful to know I was still orgasmic.
She and I have since had intercourse and oral sex (both ways) many times, and let's just say the doctors were wrong. I am as happily orgasmic as she is. And cumming into her mouth is usually just as sweet as into her pussy. There is nothing like the combination of love and skill.
The only times climaxing in her vagina is even better, are those when I'm thrusting in and out of her really rapidly (she loves that), and she pants to another climax, her pussy walls squeezing my cock, at the same time I cum. But that's another story.