I too couldn't have anyone touch the one deck I own and use. It's a very personal thing, as this deck is for healing, journeying, meditation, and is incredibly precious to me. Just know that it would be wrong for anyone else to handle the cards. It'd feel almost as if someone was sat in a private counselling session listening in to all private feelings and thoughts. And I do feel other energies would affect the cards, as my own do. Realise can do cleansing, but with being too open to everything/picking up on everything, am having to learn to really ground and protect, so it would be an extra worry and more energy used if was worrying about and cleansing cards too! Plus not great health just now, so learning, among other things, a lot of lessons about energy and how important it is to keep it clean, and how strongly this affects intuition/channel/ability to function and 'see' clearly. Feel that e.g. shamanic or ritual sacred objects are kept as that, and regard cards the same.
Not ready just yet to do readings exchange, but feel confident about doing that when the time's right, and don't feel that not having the person here and handling cards would negatively affect a reading. So am looking forward to when the time's right! As and when any face-to-face readings happen with the deck, I'd shuffle them anyway, as they're large (Druidcraft) and wouldn't want to risk any damage to them. Can fully understand other posts that say about we're all connected anyway, can cleanse deck afterwards, or that cards are just bits of card, but I'd kind of see that as meaning there's no need still for anyone to touch cards, as can tune in beyond physical objects to the connectedness.
Feel everything gets infused with a sense of place and energy, and e.g. a badly haunted house doesn't help it's occupants with their clarity or functioning or progress, so I'd rather keep deck clean and let intuition and insights have a clean channel, and give best reading possible, without worrying about any other energies affecting cards.
Cat
