Hello smc4761,
Im like yourself recently off MDI after 41 years and now using 640g pump. I was also concerned about sleeping with pump as again Im a restless sleeper! I clip it to some bed shorts so to speak and sometimes wake with pump wherever. I was concerned about tubing although it does bend it doesn't affected insulin delivery. When I set changed, I experimented on the old used tubing to see how much it would bend! lol.
If I as a shirt and tie man I wouldn't be so concerned about a little visible tubing when pump was in a pocket or some place.
I hope pump therapy works well for you as it is me, Im still fasting for Basal rates and learning about 'temp basal' for prolonged exercise as well as all things 640g.
640g is cool
I unclip for showers, remembering to clip on the supplied cover, it would be the same for swimming, this is a cut and paste from medtonics Q&A -Your MiniMed® 670G insulin pump is waterproof (watertight rating IPX8) at a depth of up to 3.6 metres for up to 24 hours, when properly assembled with the reservoir and tubing inserted.
Best wishes
David
eta I've read here about some folk having problems with their 640g pumps, mine has been fine and I understand that medtronic are excellent at customer service personally, what the DSN have told me and whats posted here.