UPDATE (10 DAYS IN):
Weight gain: It's 10 days after first pin (I'll be doing my 4th pin later tonight!). I've gained 5 lbs so far which is probably pretty much all water weight. I've been cutting for the past few months and I didn't take time to bump calories up slowly or anything. I was literally on 2300 kcals/day and then on the day of my first injection I jumped that straight up to 3200 kcals/day which is a slight surplus for me. It's pretty normal for me to add a few lbs of water weight when jumping from a deficit straight in to a surplus so no surprise there.
Appearance: Feeling slightly fuller, a little water weight added. Still lean and vascular though
Diet: Have been hitting my 3200 kcal/day every single day. Being honest I have actually overshot this on a number of days where I probably easily consumed anything up to 4000 kcals. Need to start controlling this a little better as I want to stay as lean as possible while adding mass. But hey, at least I'm not under eating! lol
Gym Performance: Haven't really added any weight to my lifts but I have added reps to sets instead. For example, I've squatted 3 times since starting the cycle 10 days ago. On the first day I did 100kg (225 lbs) for 3 sets of 8 (go easy on me, this was my first time squatting in months and at the end of a natty cut my strength is down the drain lol). Second day squatting managed 100kg - 3 sets of 9 & third day managed 3 sets of 10 (the 3x10 felt easier than the 3x8 too!! haha).
Sides: None
Summary: Have gained weight & strength but I'm putting it all down to the extra calories I'm consuming now and not the test (since I'm only 10 days after first pin). However, looking forward to feeling the test kick in and hopefully I'll feel that very soon... Will be sure to update as soon as I do!