Grow on both sides of a trellis?

I'm growing cucumbers and small zucchinis in a garden plot, and have put up a cedar trellis for each. I'm going to plant peas in there, and am wondering if I can grow them up the back side of the 7' high cucumber trellis. I'm thinking it will either be a perfect use of space, or the greenery will be too dense causing competition, disease, or just difficulty picking them, and I'll regret it.

Years ago I used green plastic netting for container peas with great success, and have considered hanging this down the backside of the trellis, but figured that would make it harder to get any cucumbers that poke through, or peas that are on the other side of it. There's only about 3' between the two trellises right now, so not a lot of room if I'm adding another between them (but good room for something to grow).

Any suggestions/ideas? :)

Would they get any sun on the back side of the trellis?

What compass direction are they facing? It might work with the peas facing northeast and the heat lovers facing southwest.

Better solution for next year would be to have two plantings of peas early and late. You could still try later fall peas this year. They would overlap with the squash and cukes, not after they are torn out.

The real problem to planting both sides of a trellis is the roots grow into each other and end up competing with each other for nutrients and water. Been there and done that. You may get away with it if you planted a shallow root crop on one side. Once I planted sugsr snap peas early then when they were half done I trans planted beans on the other side. The beans did well but long prior to their flowering the peas were ripped out and then I planted a wide row of bush beans that did ok.