score:5
All Catholic churches I have attended have you line up to the front, you are given a communion (either placed in your hand or in your mouth), and on the way back to your seat is a wine bearer, who will offer you a sip from the cup. Unless you place the host in your mouth and then partake from the wine cup, it would not be possible to do this.
In other churches, as you have said, this can be common, but at a standard Catholic church it's not frowned upon as much as not possible following the standard setup.
Upvote:1
This gives you the Catholic use of and understanding of intinction. Intinction is not permitted by the laity receiving Eucharist, but is done by the priest according to the General Instruction of the Roman Missal.
- If Communion from the chalice is carried out by intinction, each communicant, holding a Communion-plate under the mouth, approaches the Priest who holds a vessel with the sacred particles, with a minister standing at his side and holding the chalice. The Priest takes a host, intincts it partly in the chalice and, showing it, says, The Body and Blood of Christ. The communicant replies, Amen, receives the Sacrament in the mouth from the Priest, and then withdraws.
See also the following link discussing this issue for Catholics - http://www.ewtn.com/vexperts/showmessage.asp?number=563899