Yes or No, and why please.

I thinking of purchasing these to make adjustable rear links.

What does everyone think?

Everybody else does. Make sure you get them big enough to stand the stress they will undergo.

I was sort of concerned on the fact that there are not any bushings.

Not an issue with a good shock/spring?

Thet put more load direct on to chassis etc. compared to rubber or polyurethane which absorb shock loads far better.

On a road car probably not worth it, for track use probably worth it.
Its a case of personal preferance, cost and the final use of the vehicle.

I'm using rose joints on the inboard ends of my IRS. The deciding factor for me was the ajustability they will allow when setting up the suspension.

Mick