I don’t know what ICKSP means, but at this particular Church, everyone was doing it.
Institute of Christ the King Sovereign Priest

A Society of Apostolic Life that celebrates the liturgy in the traditional form. Usually when you see a Mass celebrated by them or by FSSP, you can be assured that its as close to perfect as it gets.
The rubrics on the
solita oscula (the customary kisses) given by altar servers to objects or the hand of the celebrant are varied. Ideally it goes like this:
- When giving an object: kiss the object first, then the celebrant’s hand.
- When receiving an object: kiss the celebrant’s hand first, then the object.
– When receiving a sacramental, it is kissed first, then the hand.
→ biretta: on one of its four sides
→ aspergilium: on the end of the handle
→ incense spoon: on the end of the handle
→ thurible: on the disk
→ cruets: on their sides, only during Offertory (no kisses during the Lavabo and ablutions)
Now, the rubrics specifically say that servers
may kiss, not that they have. Furthermore, Fr. Z. mentions that in “The Ceremonies of the Roman Rite Described”, the reference work of Fortesque, we read:
By custom these oscula are frequently omitted altogether by laymen and should be nowadays.
So while deacons and subdeacons at a Solemn High Mass would continue to perform the solita oscula (as Tarpeian Rock mentioned, for example) non-clerical servers in Low Mass or Missa Cantata probably will not (and some would add: should not).