This January 1st, co-fare is reduced to $1.50 so you can use TTC on rainy/slushy days, while using bikeshare on good/dry days.
You can also try that. If it's difficult to battle the crowds, try a folding bike to more easily battle the counter-flowing crowds.
At the moment, I highly recommend bike share because it allows you to use TTC spontaneously "in the other direction" if weather is terrible.1
Presto special of 50 bucks for unlimited 30-minute bike rentals for one year. Pretty cheap. Less than the price of annual bike maintenance at some places! (But no theft, damage, or maintenance worries -- that's *their* responsibility once the bike is docked)
You get a bike share card which allows you to spontaneously rent any bike at any bike dock in a mere 3 seconds, and return to any dock in any location. Or if you forgot your bike share card from home, just use TransitApp to rent a bike if you don't have the card.
In a counter-commute, you're at a huge advantage.
The Union bike share dock is never full in the morning as people are rapidly taking them away. They even have a bikeshare van nearby to keep refilling the docks as quickly as they are being taken away. Also, even in a normal commute (mine) -- Union docks is manned by bikeshare staff in the evening so they can take your bike at that location even if the bikeshare docks are full.
There are also several nearby docks, plus docks on Wellington (1 block walk) and King (2 block walk). You've got more than half a dozen docks within 2 block walk, that is a whopping couple hundred bikes total:
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The numbers seen on the pins from the map at torontobikeshare.com, you can tell whether a dock is full, empty, or has bikes. Or more quickly with better color indicators, you can use an app (e.g. SpotCycle, etc) to determine which docks near you is empty or is full. This allows you to avoid the "dock hunting" game, even before you step out of the door or train. But that probably doesn't apply to you because of yourcounter-commute.