SWIm tried this a while ago. For anyone who has inconsistent smoking technique like SWIM, You may want to try insuflation. SWIM insuflated a dose of 50mg of DMT one night. The nasal discomfort is awful, but the effects can be quite astounding. While smoking sends you immediately into hyperspace, insuflating is like a gentle ride in and out of hyperspace. The effects for SWIM began to show at about t+5mins, and lasted for about t+40 mins. The closed eye visuals were much slower moving, but just as intense as if smoked. Just beware, the nasal burn can be very irritating. It's not something I would recommend doing every session, but is great for a relaxed version of hyerspace.