Hi Kim I'm a relatively new tandem tslim user (18 months). As a female I don't find the tethering an issue (bra or pocket, I have invested in some gorgeous leggings with pockets, though some people use special pump waistbands.) If it falls out of my pocket it doesn't get pulled out of my body, it just hangs there looking stupid.
Water sports are a bit of a pain. I generally disconnect and then give myself more insulin every couple of hours.
I got used to it pretty quickly though it's important to keep your basal rates up to date and I'm still learning.
I love my pump and honestly couldn't imagine life without it now.
Disadvantages : more gear when travelling, watersports issue.
Tagging
@Juicyj who is more experienced.