The onerous conditions referred to are a little more significant than that.
First of all, the law as it stands is that a will operates only from death - i.e. you can change it as often as you want. When you name an executor in your will, you have no obligation to let them know of the fact. If you think that you might want to change your will and\or your executor in the future, you might prefer to keep it quiet for the moment. The Bank of Ireland requirement has the effect of requiring an old person to "nail their colours to the mast" in terms of notifying both the bank AND the executor of the executor's appointment (and the executor has to sign an undertaking to co-operate with the bank). There is no doubt in my mind that this is an un-necesssary intrusion into an old person's legitimate wish to keep their affairs private. For this reason alone, there are many situations in which I would recommend not using the BOI product.
Secondly, a Life Loan customer is required to give the details as to who will benefit under the will. This is potentially a far more serious issue. Of course, a person is still free to change their will, but the details notified to the Bank are now on record and may well be accessible after death ( a solicitor on the other hand will, if so instructed, destroy all record of an old will when a new one is made). So, a subtle pressure is now being exerted on the old person not to change their will, for fear of the agro it may cause in the future.
These are not small issues.
There are customers out there for whom these issues will not be important (for example an old widower with one child, that child being executor and sole beneficiary), but for many customers, these issues are important enough that no solicitor could do his\her job properly without raising these concerns.
However, by the time the customer comes in to their solicitor, they may already have been sold this product and the solicitor is left in the uncomfortable position of being the bearer of the bad news about the product drawbacks. (I like the Bank of Ireland line that they are not selling it - just giving it to people who ask for it. )